BACKGROUND

100011 A computing device may include and/or may be in communication with a display device that a Slows a user to view content. Some display devices may be a touch screen display device that allows a user to provide touch inputs. For exampie, a user may use their finger and/or a stylus pen to provide touch inputs on the screen in order to manipulate the content on the screen.

BRIEF DESCRIPTION OF THE DRAWINGS

[0002] Some examples of the present application are described with respect to the following figures:

|0003| FIG. 1 is a block diagram of exampie eiectrowettlng display surfaces that are controlled based on settings;

[0004] FIG. 2 is a block diagram of an example display device that is controlled based on user-specified settings;

[00053 FIG. 3 is a block diagram of an example computing device that is controlled based on user-specified settings;

[00063 FIG. 4 is a block diagram of an exampie touch screen display device that is controlled based on user-specified settings; and

[0007J FIG. 5 is a block diagram of another exampie touch screen display device that is controlled based on user-specified settings.

DETAILED DESCRIPTION

[0008} As described above, a computing device may include and/or may be in communication with a display device that allows a user to view content. Examples of these devices include smartphones, tablets, laptops, monitors, and the like. Because the use of such devices has become prevalent, protecting a user's privacy while using these devices has become a concern. Additionally, prolonged use of these display devices may cause health issues for a user, such as discomfort to the user ^' s eyes, eye damage and/or disease, premature aging of the eye, and the like.

0009| Examples discussed herein provide techniques for providing privacy, brightness and contrast controls, and/or ultraviolet (UV) and/or blue light absorption based on user-specified settings that may be used to manage an electrowetting display (EWD) device. The technique of electrowetting is the modification of the wetting properties of a surface using an applied electric field. An EWD device may be a device included in a display device that uses electrowetting techniques to display and/or block content, provide brightness and/or contrast controls, and/or reduce UV/blue light emissions. The display device may control its EWD device based on user-specified settings. For example, a user-specified setting may specify a manner of making at least a portion of the display private, and the EWD device of the display device ma apply a voltage to areas of the EWD device according to the settings such that the portion of the display is made private. A user-specified setting may also specify a manner of setting the brightness and/or contrast for at least a portion of the display, and the EWD device of the display device may apply a voltage to areas of the EWD devic according to the settings such that the brightness and/or contrast is adjusted accordingly for the portion of the display. A user-specified setting may also specify a manner of reducing UV/blue light emissions for at least a portion of the display, and the EWD device of the display device may apply a voltage to areas of the EWD device according to the settings such that UV/blue light emission is reduced for the portion of the display.

£0010J Referring now to the figures, FIG. 1 is a block diagram of example EWD surfaces 100, 120, and 140 that are controlled based on settings, such as settings 110 and 130. The EWD surfaces 100, 120, and 140 may be part of an EWD device that may manage privacy, brightness and/or contrast, and UV/blue light emissions based on settings. The EWD surfaces 100, 120, and 140 may include a transparent electrode layer 102, a transparent hydrophobic insulator layer 104, oil 106, and water 108. [00113 The transparent electrode Iayer 102 may be any suitable

electrically-conductive materia! that transmits a relatively high percentage of tight such that the transparent electrode layer 102 is transparent and/or at feast semi-transparent, allowing content to be displayed through the transparent electrode layer 102, The transparent electrode Iayer 102 may be a conductor used to apply voltage to the EWD surfaces 100, 120, and 140. OOI23 The transparent hydrophobic insulator layer 104 may be any suitabie water-repe!iant material that transmits a relatively high percentage of tight such that the transparent hydrophobic insuiator iayer 102 is transparent and/or at least semi-transparent, allowing content to be displayed through the transparent hydrophobic insulator layer 104, The transparent hydrophobic insuiator layer 104 may insulate and protect the transparent electrode iayer 102 from the oil 106 and/or water 108,

[00133 The oil 106 may be any suitable type of oil used to provide privacy, a particular brightness and/or contrast level, and/or UV/blue Sight reduction. The oil 106 may be any suitable type of opaque or semi-transparent oil (e.g., oil with 5-95% transmittance) capable of at Ieast partially blocking content, providing a particular brightness and/or contrast levei, and/or reducing UV/blue tight emission, in some examples, the oil 106 may be a yellow oil (e.g., to reduce UV/blue light emission) and/or an anti-reflective oil (e.g., to provide a particular brightness and/or contrast level). Examples of anti- reflective oils include oiis formed from materials such as silver, palladium, ruthenium, rhodium, gold and platinum, SiC¾ MgF , SnOa, SnOa+SbaOs, InzOs, I zOs* S 02, TiC , ZrC¾ metai oxide, a metal fluoride, fumed silica, polymer particles, hollow transparent ceramics (e.g., silica, borosilicate glass, soda-lime glass, etc.), hollow transparent resins, and the like.

[00143 The EWD surface 100 shows the distribution of oii 106 and water 108 along the transparent hydrophobic insuiator layer 104 when no voltage is applied at the transparent electrode layer 102 (e.g., based on user-specified settings or based on a default setting). The oil 108 is distributed along the surface of the transparent hydrophobic insuiator iayer 104, as there is no charge moving the oil 106 away from, and moving the water 108 towards, the transparent hydrophobic insulator layer 104, [0015| The EWD surface 120 shows the distribution of oil 106 and wate 108 along the transparent hydrophobic insulator layer 104 when a voitage is appiied to the transparent eiecirode layer 102 based on the settings 1 10 such that a charge 122 is created at that portion. For example, the settings 110 may indicate that content displayed at a particular portion of the display is to be at feast partially blocked (e.g., using opaque or semi-transparent oil), and voltage may be appiied accordingly such that the oil 108 is moved away from the charge 122 created by the applied voitage and such that the water 108 is moved toward the charge 122 created by the applied voitage. Similarly, the settings 110 may indicate a particular brightness/contrast level or a particular reduction in UV/blue light emission for at least a portion of the display, and voltage may be applied accordingly such that the oil 108 is moved away from the charge 122 created by the applied voltage and such that the water 108 is moved toward the charge 122 created by the applied voltage.

[0016] The EWD surface 140 shows the distribution of oil 106 and water 08 along the transparent hydrophobic insulator layer 104 when a voltage is applied to the transparent electrode layer 102 based on the settings 30 such that a charge 142 is created at that portion. For example, a modification to the settings may be detected (e.g., a change from settings 1 10 to settings 130), and the voltage appiied to the transparent electrode layer 102 may be adjusted based on the modification. As the EWD surface 140 shows, the voltage may be applied at selective areas according to the settings 130 to create a charge 1 2 at various portions of the EWD surface 140, which may cause the oil 108 to be displaced between each charge 142 and may cause the water 108 to be moved toward each charge 142.

OOI73 ^G, 2 is a block diagram of an example display device 200 that is controlled based on user-specified settings 220. The display device 200 may be any suitable computing device having a display, such as a notebook computer, a desktop monitor, a tablet computing device, a mobile phone, an electronic book reader, a display on a printing device, or any other suitable electronic display device capable of displaying content. The display device 200 may include a display component 2 0 to display various content on the display device 200 (e.g., using a processors) of the display device 200 and/or a processor(s) in communication with the display device 200).

|0018J The display component 210 may include an EWD device 212 and a display panel 214 adjacent (e.g., next to, touching, etc.) to the EWD device 212, The display panel 214 may be any suitable electronic componenf(s) to display content. For example, the display pane! 214 may display content based on an input (e.g., touch input) received by the display device 200. In some examples, the display panel 2 4 may include an in-celS touch screen sensor to receive touch inputs, or the display component 210 may include a touch screen sensor to receive touch inputs. The display pane! 214 may be any suitable type of display panel, such as a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a polymer Sight emitting diode (PLED) display, a plasma display, bt-stabie display (e.g., a cholesteric display, a cholesteric LCD, a micro- eiectromechanicai system (MEMS Abased display, etc.), and the like.

[0019] The EWD device 212 may be any suitable type of EWD device having any suitable type of oil (e.g., opaque oil, semi-transparent oil, anti- reflective oil, yellow oil, UV/b!ue light absorption oil, etc.), where the location of the oil may be based on voltage applied according to the user-specified settings 220. The EVVD device 212 may have an EWD surface, such as the EWD surfaces 100, 120, and 140 shown in FIG. 1 . For example, the EWD device 212 may provide a voltage to at least a portion of the EWD device 212 such that oil in the EWD device 212 is moved away from the voltage and water in the EWD device 212 is moved toward the voltage. This may allow the content displayed by display panel 214 to be displayed based on locations of the oi! and the water in response to the voitage.

[0020] The voltage may be provided based on the user-specified settings 220. In some examples, the user-specified settings 220 may include a privacy setting , and a voitage may be provided such that the oil in the EWD device 212 at least partially blocks the content displayed by display panel 214 according to the privacy setting. In this example, the oil in the EWD device 2 2 may be art opaque oil, a semi-transparent oil, or an anti-reflective oil [00213 In some examples, the user-specified settings 220 may include a brightness or contrast setting, and a voltage may be provided such that the content displayed by display panel 214 is displayed based on the brightness or contrast setting. In this example, the oil in the EWD device 212 may be an anti- reflective oil.

[0022] in some examples, the user-specified settings 220 may include a UV/blue light reduction setting, and a voltage may be provided such that the oil in the EWD device 212 at least partially blocks UV/blue light emitted from the content displayed by display panel 214 according to the UV/blue light reduction setting. In this example, the oil in the EWD device 212 may be an UV absorption oil, a blue Sight absorption oil, an opaque yeiiow oil, or a semi- transparent yellow oil

[0023] In some examples, a user may select the degree of privacy, brightness/contrast, and/or UV/blue light reduction using the user-specified settings 220, and a voltage may be applied in a particular amount and/or at a particular Socation(s) according to the user-specified settings 220. For example, the user-specified settings 220 may specify a viewing area and a non-viewing area of the display device 200, and a voltage may be provided in the viewing area such that the oil in the EWD device 212 at least partially blocks the content in the non-viewing area or at least partially adjusts brig tness/contrast in the non-viewing area.

[0024] FiG. 3 is a block diagram of an example computing device 300 that is controlled based on user-specified settings 320. The computing device 300 may be similar to the display device 200 of FIG, 2 and may include a display component 310, which may be similar to the display component 210 of FIG. 2, user-specified settings 320 (e.g., stored in a memory device of the computing device 300), and a processor 330.

[00253 The display component 310 may include an EWD device 312 and a display panel 314 adjacent to the EWD device 312. The display panel 314 may be similar to the display panel 214 of FIG, 2 and may display content. The EWD device 3 2 may be similar to the EWD device 212 of FIG. 2 and may be adjacent to the displa panel 314. [0026] Processor 330 is a tangible hardware component thai may be a central processing unit (CPU), a semiconductor-based microprocessor, and/or other hardware devices suitable for retrieval and execution of instructions stored in a machine-readable storage medium. Processor 300 may fetch, decode, and execute any instructions to control a process of displaying content on the computing device 300 based on the user-specified settings 320, As an alternative or in addition to retrieving and executing instructions, processor 330 may include at least one electronic circuit that includes electronic components for performing the functionality of the instructions. For example, the processor 330 may be any suitable processors) in

communication with the EWD device 312 and may identify the user-specified settings 320, and, based on the user-specified settings 320, may apply a voitage to at least a portion of the EWD device 312 such that oil in the EWD device 3 2 is moved away from the voltage and water in the EWD device 312 is moved toward the voltage. The content displayed by the display panel 314 may be displayed based on locations of the oil and the water in response to the voltage. For example, the user-specified settings 320 may specify a privacy setting, a brightness/contrast setting, and/or a UV/blue light reduction setting, and the voltage may be applied such that the oil and water are moved to locations that allow the content to be displayed and/or blocked according to the user-specified settings 320.

[00273 4 is a block diagram of an example touch screen display device 400 that is controlled based on user-specified settings 420. The touch screen display device 400 may be similar to the display device 200 of FIG. 2 and may include a display component 410, which may be similar to the display component 210 of FIG. 2.

|0028] The display component 410 may include a touch screen sensor 412, an EWD device 414, and a display panel 416. The touch screen sensor 412 may be any suitable sensor to detect and/or process touch inputs. For example, the touch screen sensor 412 may receive a touch input (e.g., from a user).

|O029J The display pane! 418 may be similar to the display panel 214 of FIG. 2 and may display content. For example, the display panel 416 may display content based on the touch input received by the touch screen sensor 412.

[O030J The EWD device 414 may be similar to the EWD device 212 of FIG. 2 and may be adjacent to and/or between the touch screen sensor 412 and th display panel 416. The EWD device 414 may, based on the user- specified settings 420, provide a voltage to at least a portion of the EWD device 414 such thai oil in the EWD device 414 is moved away from the voltage and water in the EWD device 414 is moved toward the voltage. The content displayed by display panel 418 may be displayed based on locations of the oil and the water in response to the voltage. For example, the user- specified settings 420 may specify a privacy setting, a brightness/contrast setting, and/or a UV/bSue light reduction setting, and the voitage may be provided such that the oil and water are moved to locations that allow the content to be displayed and/or blocked according to the user-specified settings 420.

[00313 F!G- 5 is a block diagram of another example touch screen display device 500 that is controlled based on user-specified settings 520. The touch screen display device 500 may be similar to the display device 200 of FIG. 2 and may include a display component 510, which may be similar to the display component 210 of FIG. 2.

[0032] The display component 510 may include a touch screen sensor 512, EWD devices 514 and 516, a display panel 518, and a switch 519. The touch screen sensor 512 may be similar to the touch screen sensor 412 of FIG. 4 and may receive, detect, and/or process a touch input (e.g., from a user).

[0033] The display pane! 518 may be similar to the display pane! 214 of FIG. 2 and may display content. For example, the display panel 518 may display content based on the touch input received by the touch screen sensor 512.

[00343 The EWD devices 514 and 516 may each be similar to the EWD device 212 of FIG. 2 and may be adjacent to each other. The EWD devices 514 and 518 may each independently manage the oil and water in the respective devices such that content may be displayed based on the user- specified settings 520. For example, EWD device 514 may provide a first voltage to at least a portion of the EWD device 51 according io a first user- specified setting of the user-specified settings 520 such thai oil in the EWD device 514 is moved away from the voltag and water in the EWD device 514 is moved toward the voltage. The content may be displayed through the EWD device 514 based on locations of the oil and the water in response to the first voltage. The EWD device 516 may provide a second voltage to at least a portion of the EWD device 516 according to a second user-specified setting of the user-specified settings 520 such that oil in the EWD device 516 is moved away from the voltage and water in the EWD device 516 is moved toward the voltage. The content may be displayed through the EWD device 514 based on locations of the oii and the water in response to the second voltage. The first user-specified setting and the second user-specified setting may each include at least one of a privacy setting, a brightness or contrast setting, and a UV/blue light reduction setting. For example, the first user-specified setting may be a privacy setting, and the EWD device 514 may include a particular type of opaque, semi-transparent, and/or anti-reflective oil that may be used to block content based on the first user-specified setting. The second user- specified setting may be a UV/blue light reduction setting, and the EWD device 516 may include yellow oil, UV absorption oil, and/or blue light absorption oii that may be used to reduce UV/blue light emission based on the second user-specified setting,

10035] The switch 519 may be any suitable electronic switch device in communication with components of the display component 510 (e.g., the touch screen sensor 512, the EWD device 514, the EWD device 516, and the display panel 518). The switch 519 may manage and control a manner of displaying content based on the user-specified settings 520. For example, the switch 519 may use the user-specified settings 520 to manage and control the display of content by directing the EWD devic 514 to display content based on a first user-specified setting and by directing the EWD device 516 to display content based on a second user-specified setting (e.g., as described above).