Display with emitters below active area

Abstract

Light emitters operating through the display may result in display artifacts even when the light emitters operate at invisible wavelengths. To mitigate artifacts caused by light emitters operating through the display, the display may have a higher density of thin film transistor sub-pixels than the emission sub-pixels. This allows an area in the display to include emission sub-pixels but not thin film transistor sub-pixels. The light emitter is operable through the area in the display. In addition, to reduce the amount of space occupied by a gate driver circuit in an inactive area of a display, at least a portion of the gate driver circuit may be positioned in the active area of the display. To accommodate the gate driver circuit, the emission sub-pixels may be laterally offset relative to corresponding thin film transistor sub-pixels.

Description

[0001] This application claims priority to U.S. Patent Application No. 18 / 476,892, filed on September 28, 2023, U.S. Provisional Patent Application No. 63 / 431,453, filed on December 9, 2022, and U.S. Provisional Patent Application No. 63 / 476,578, filed on December 21, 2022, the entire disclosures of which are hereby incorporated by reference in their entireties. Technical Field

[0002] The present disclosure generally relates to electronic devices, and more particularly to electronic devices having a display. Background Art

[0003] Electronic devices typically include a display. For example, an electronic device may have a light-emitting diode (LED) display based on light-emitting diode pixels. In this type of display, each pixel includes a light-emitting diode and circuitry for controlling the application of a signal to the light-emitting diode to produce light.

[0004] There is a trend towards borderless electronic devices with full-screen displays. However, these devices may still need to include sensors such as cameras, ambient light sensors, and proximity sensors to provide additional device capabilities. Since the display now covers the entire front of the electronic device, the sensors will have to be placed under the display stack.

[0005] It is in this context that the embodiments herein are created. Summary of the Invention

[0006] An electronic device may include a plurality of pixels disposed in a light-emitting region. Each pixel of the plurality of pixels may include an emissive sub-pixel and a thin-film transistor sub-pixel that controls the emissive sub-pixel. The emissive sub-pixels may have a first number of emissive sub-pixels per unit area, the thin-film transistor sub-pixels may have a second number of thin-film transistor sub-pixels per unit area, and the second number may be greater than the first number. The electronic device may further include: a region of the plurality of pixels that includes a first subset of the emissive sub-pixels and does not include any thin-film transistor sub-pixels; and a light source that emits light through the region of the plurality of pixels.

[0007] The display may include a plurality of pixels disposed in a light-emitting region. The light-emitting region may have rounded corners, each of the plurality of pixels may include an emissive sub-pixel and a thin-film transistor sub-pixel that controls the emissive sub-pixel, and the emissive sub-pixels may have a uniform density over the light-emitting region. The display may further include: a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and a gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines. In a first subset of rows of the emissive sub-pixels that include rounded corners, the emissive sub-pixels may overlap with the gate driver circuit along an edge of the light-emitting region. In a second subset of rows of the emissive sub-pixels that do not include rounded corners, the emissive sub-pixels may not overlap with the gate driver circuit along the edge of the light-emitting region.

[0008] An electronic device may include: a display including a plurality of pixels disposed in a light-emitting region, each of the plurality of pixels including an emissive sub-pixel and a thin-film transistor sub-pixel that controls the emissive sub-pixel, and the emissive sub-pixels having a uniform density over the light-emitting region; and a proximity sensor including a light source that emits light through a portion of the plurality of pixels that does not include the thin-film transistor sub-pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of an exemplary electronic device having a display in accordance with some embodiments.

[0010] Figure 2 is a schematic diagram of an exemplary display in accordance with some embodiments.

[0011] Figure 3 is a top view of an exemplary display having gate driver circuits on both sides of the display in accordance with some embodiments.

[0012] Figure 4 is a top view of an exemplary display having a gate driver circuit in a light-emitting region of the display in accordance with some embodiments.

[0013] Figure 5A is a top view of an exemplary display having emissive sub-pixels overlapping corresponding thin-film transistor sub-pixels in accordance with some embodiments.

[0014] Figure 5B is a cross-sectional side view of an exemplary display having emissive sub-pixels overlapping corresponding thin-film transistor sub-pixels in accordance with some embodiments.

[0015] Figure 6AIs a top view of an exemplary display having some emissive sub-pixels that are laterally offset relative to corresponding thin-film transistor pixels, according to some embodiments.

[0016] Figure 6B Is a cross-sectional side view of an exemplary display having some emissive sub-pixels that are laterally offset relative to corresponding thin-film transistor pixels, according to some embodiments.

[0017] Figure 7 Is a cross-sectional side view of an exemplary display having emissive sub-pixels with shorted anodes that are laterally offset relative to corresponding thin-film transistor pixels, according to some embodiments.

[0018] Figure 8 Is a top view of an exemplary display having an active area that overlaps with a sensor having a light source, according to some embodiments.

[0019] Figure 9 And Figure 10 Is a top view of an exemplary display according to some embodiments, the exemplary display having a portion with thin-film transistor pixels with uniform density and an area without thin-film transistor pixels.

[0020] Figure 11 Is a top view of an exemplary display according to some embodiments, the exemplary display having different portions with thin-film transistor pixels with different densities and an area without thin-film transistor pixels.

[0021] Figure 12 Is a top view of an exemplary display according to some embodiments, wherein at least some thin-film transistor pixels are interposed between a first portion and a second portion of a gate driver circuit.

[0022] Figure 13 Is a top view of an exemplary display according to some embodiments, the exemplary display having an area without thin-film transistor pixels in a rounded corner.

[0023] Figure 14 Is a cross-sectional side view of an exemplary display according to some embodiments, the exemplary display having a thermal diffusion layer that overlaps with a light source below the display.

[0024] Figure 15 Is a cross-sectional side view of an exemplary display according to some embodiments, the exemplary display having a light-blocking metal layer that blocks light from a light source below the display.

[0025] Figure 16 Is a cross-sectional side view of an exemplary display according to some embodiments, the exemplary display having an inorganic reflector layer that blocks light from a light source below the display. Detailed Description

[0026] Figure 1 Illustrative electronic devices of types that may be provided with a display are shown. The electronic device 10 may be a computing device such as a laptop computer, a computer monitor including an embedded computer, a tablet computer, a cellular phone, a media player, or other handheld or portable electronic device, a smaller device (such as a wristwatch device, a hanging device, a headset or earpiece device, an augmented reality (AR) headset and / or a virtual reality (VR) headset, a device embedded in glasses or other equipment worn on a user's head, or other wearable or micro device), a display, a computer monitor including an embedded computer, a computer monitor not including an embedded computer, a gaming device, a navigation device, an embedded system (such as a system in which electronic equipment with a display is installed in a kiosk or a vehicle), or other electronic equipment.

[0027] As Figure 1 shown, the electronic device 10 may have a control circuit 16. The control circuit 16 may include storage and processing circuitry for supporting the operation of the device 10. The storage and processing circuitry may include storage devices such as hard disk drive storage, non-volatile memory (e.g., flash memory configured to form a solid state drive or other electrically programmable read only memory), volatile memory (e.g., static or dynamic random access memory), etc. The processing circuitry in the control circuit 16 may be used to control the operation of the device 10. The processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio chips, application specific integrated circuits, etc.

[0028] Input-output circuitry in the device 10 such as the input-output device 18 may be used to allow data to be provided to the device 10 and to allow data to be provided from the device 10 to external devices. The input-output device 18 may include buttons, joysticks, rollers, touch pads, keypads, keyboards, microphones, speakers, audio generators, vibrators, cameras, sensors, light emitting diodes and other status indicators, data ports, etc. A user may control the operation of the device 10 by supplying commands through the input-output device 18 and may receive status information and other output from the device 10 using the output resources of the input-output device 18.

[0029] The input-output device 18 may include one or more displays such as the display 14. The display 14 may be a touch screen display including a touch sensor for acquiring touch input from a user, or the display 14 may be non-touch sensitive. The touch sensor of the display 14 may be based on an array of capacitive touch sensor electrodes, an acoustic touch sensor structure, a resistive touch member, a force-based touch sensor structure, a light-based touch sensor, or other suitable touch sensor arrangement.

[0030] The control circuit 16 can be used to run software on the device 10, such as operating system code and application programs. During operation of the device 10, the software running on the control circuit 16 can display images on the display 14.

[0031] The display 14 can be an organic light emitting diode display, a display formed by an array of discrete light emitting diodes each formed by a crystalline semiconductor die, or any other suitable type of display. A configuration in which the pixels of the display 14 include light emitting diodes is sometimes described herein by way of example. However, this is merely illustrative. Any suitable type of display (e.g., a liquid crystal display) can be used for the display 10 if desired.

[0032] In some cases, the electronic device 10 can be a watch device. The display 14 of the watch device can be positioned in a housing. The watch device can be coupled to the housing.

[0033] Figure 2 Illustration of an exemplary display. As Figure 2 shown, the display 14 can include layers, such as a substrate layer 26. The substrate layer, such as layer 26, can be formed from a rectangular planar material layer or a material layer having other shapes (e.g., circular or other shapes having one or more curved edges and / or straight edges). The substrate layer of the display 14 can include a glass layer, a polymer layer, a composite film including a polymer material and an inorganic material, a metal foil, and the like.

[0034] The display 14 can have an array of pixels 22 for displaying images for a user, such as a pixel array 28. The pixels 22 in the array 28 can be arranged in rows and columns. The edges of the array 28 (sometimes referred to as the active area 28) can be straight or curved (i.e., each row of pixels 22 and / or each column of pixels 22 in the array 28 can have the same length or can have different lengths). Any suitable number of rows and columns can be present in the array 28 (e.g., ten or more, one hundred or more, or one thousand or more, etc.). The display 14 can include pixels 22 of different colors. By way of example, the display 14 can include red pixels, green pixels, and blue pixels. If desired, a backlight unit can provide backlighting for the display 14.

[0035] The display driver circuit 20 can be used to control the operation of the pixels 28. The display driver circuit 20 can be formed by an integrated circuit, a thin film transistor circuit, and / or other suitable circuits. Figure 2The exemplary display driver circuit 20 includes a display driver circuit 20A and additional display driver circuits such as a gate driver circuit 20B. The gate driver circuit 20B may be formed along one or more edges of the display 14. For example, the gate driver circuit 20B may be disposed in the inactive area of the display along the left and right sides of the display 14, as Figure 2 shown. The gate driver circuit 20B may include a gate driver and a transmit driver.

[0036] As Figure 2 shown, the display driver circuit 20A (e.g., one or more display driver integrated circuits, thin film transistor circuits, etc.) may include communication circuitry for communicating with the system control circuit via a signal path 24. The path 24 may be formed by traces on a flexible printed circuit or other cables. The control circuit may be located on one or more printed circuits in the electronic device 10. During operation, the control circuit (e.g., Figure 1 the control circuit 16) may provide image data to a display driver integrated circuit in a circuit such as circuit 20 for causing an image to be displayed on the display 14. Figure 2 The display driver circuit 20A of is located at the top of the display 14. This is merely exemplary. The display driver circuit 20A may be located at both the top and bottom of the display 14, or located in other parts of the device 10.

[0037] To display an image on the pixels 22, the display driver circuit 20A may supply corresponding image data to a data line D (e.g., a vertical signal line) while issuing a control signal to a supporting display driver circuit such as the gate driver circuit 20B via a signal path 30. With Figure 2 the exemplary arrangement of , the data line D extends vertically through the display 14 and is associated with corresponding columns of the pixels 22. During a compensation operation, the column driver circuit 20 may use a path such as the data line D to provide a reference voltage.

[0038] The gate driver circuit 20B (sometimes referred to as a gate line driver circuit or a horizontal control signal circuit) can be implemented using one or more integrated circuits and / or can be implemented using thin-film transistor circuits on the substrate 26. The horizontal control line G (sometimes referred to as a gate line, a scan line, an emission control line, etc.) extends horizontally across the display 14. Each gate line G is associated with a corresponding row of pixels 22. If desired, there can be multiple horizontal control lines such as the gate line G associated with each row of pixels. Separate control signal paths and / or global signal paths in the display 14 can also be used to distribute other signals (e.g., power signals, etc.). The number of horizontal signal lines in each row can be determined by the number of transistors in the display pixels 22 that are independently controlled by the horizontal signal lines. Display pixels of different configurations can be operated by different numbers of control lines, data lines, power lines, etc.

[0039] The gate driver circuit 20B can assert control signals on the gate line G in the display 14. For example, the gate driver circuit 20B can receive a clock signal and other control signals from the circuit 20A on the path 30 and, in response to the received signals, can assert the gate line signals on the gate line G in sequence starting from the gate line signal G in the first row of pixels 22 in the array 28. When each gate line is asserted, data from the data line D can be loaded into the corresponding row of pixels. In this way, control circuits such as the display driver circuits 20A and 20B can provide signals for the pixels 22 to indicate that the pixels 22 display a desired image on the display 14. Each pixel 22 can have a light-emitting diode and circuitry (e.g., thin-film circuitry on the substrate 26) that responds to the control signals and data signals from the display driver circuit 20.

[0040] Figure 3 A top view of an exemplary display having a gate driver circuit is shown. The gate driver circuit 20B can be formed along one or more edges of the display 14. Figure 3 An example is shown in which the gate driver circuit 20B is formed on the first opposite side and the second opposite side of the pixel array 28 (sometimes referred to as the active area AA). In other words, the first gate driver circuit 20B-1 is formed on the left side of the active area AA, and the second gate driver circuit 20B-2 is formed on the right side of the active area AA.

[0041] The gate driver circuits 20B-1 and 20B-2 can be configured to provide control signals to each pixel in the display. For example, the gate driver circuits 20B-1 and 20B-2 can provide control signals to the gates of transistors within each pixel, such as scan control signals and emission control signals. The gate driver circuits 20B-1 and 20B-2 can each include a shift register formed by a chain of register circuits. Each register circuit can provide a control signal (e.g., a switching transistor control signal, an emission enable signal, etc.) to a corresponding row of pixels. During operation, the control circuit 16 (e.g., the display driver circuit 20A) can initiate the propagation of control pulses through the shift register. As the control pulses propagate through the shift register, each gate line can be activated in sequence, thereby allowing successive rows of pixels 22 to load data from the data line D. Each register circuit can be referred to as a stage of the shift register.

[0042] In Figure 3 the example, the active area AA has a rectangular shape with rounded corners. This example is merely illustrative, and in general, the active area can have any desired shape.

[0043] As shown, the display further includes a display driver circuit 20A. The display driver circuit 20A can provide corresponding image data to the data lines D (e.g., vertical signal lines). Each data line D can be coupled to a corresponding pixel column within the pixel array 28. However, as Figure 3 shown, the width of the display driver circuit 20A can be less than the width of the active area AA. Therefore, in order to provide data to all pixel columns, a fan-out area 32 is used. In the fan-out area, the data lines D spread out from the display driver circuit 20A to reach all columns in the pixel array. With the data line fan-out area, the data lines are coupled to pixel columns in the rounded corner regions of the display.

[0044] In Figure 3 the arrangement, the gate driver circuits 20B-1 and 20B-2 and the data line fan-out area 32 are both formed in the inactive area of the display. The inactive area of the display is the area of the display that does not have pixels. Therefore, the inactive area of the display does not emit light. In general, it may be desirable to minimize the size of the inactive area of the display (e.g., to allow the active area of the display to occupy the maximum amount of relative area on the front of the device). Therefore, the gate driver circuits 20B-1 and 20B-2 and the data line fan-out area 32 undesirably increase the required size of the inactive area of the display.

[0045] To reduce the size of the inactive area, the gate driver circuit 20B-1, the gate driver circuit 20B-2, and / or the data line fan-out area 32 can be at least partially formed in the active area of the display. Figure 4is a top view of an exemplary display having a gate driver circuit 20B-1, a gate driver circuit 20B-2, and a data line fan-out region 32 formed in an active area AA. As shown, the gate driver circuit 20B-2 extends a distance 34 into the active area AA along the right edge of the active area. In other words, the right edge of the active area AA overlaps with the gate driver circuit 20B-2 (e.g., the active area may at least partially overlap with a shift register included in the gate driver circuit 20B-2).

[0046] As Figure 4 shown, the gate driver circuit 20B-2 may be partially but not fully formed in the active area AA. The gate driver circuit 20B-2 has a portion formed in an inactive area of the display, and this portion has a width 36. Generally speaking, the distances 34 and 36 may have any desired magnitudes. The distance 34 may be at least 50 microns, at least 100 microns, at least 150 microns, at least 200 microns, at least 300 microns, at least 500 microns, at least 600 microns, less than 750 microns, less than 300 microns, etc. The distance 36 may be at least 50 microns, at least 100 microns, at least 150 microns, at least 200 microns, at least 300 microns, at least 500 microns, at least 600 microns, less than 750 microns, less than 300 microns, etc.

[0047] Similar to the gate driver circuit 20B-2, the gate driver circuit 20B-1 extends into the active area AA along the left edge of the active area. Alternatively or additionally, the data line fan-out region 32 may be formed in a rounded corner region (e.g., lower left rounded corner and / or lower right rounded corner) of the active area in the active area AA.

[0048] To accommodate components formed in the active area, such as gate driver circuits (such as circuit 20B-1 or 20B-2) and / or data lines (e.g., in the data line fan-out region), the pixel array may be modified. Specifically, the density of thin film transistor sub-pixels in the display may be higher than that of emissive sub-pixels to provide additional space for the gate driver circuit and / or data lines. This technique that allows components (such as gate driver circuits and / or data lines) to be formed in the active area is described in more detail in conjunction with FIGS. 5 to 6.

[0049] Each display pixel 22 may include both a thin film transistor layer and an emission layer. Each emission layer portion may have associated circuitry on the thin film transistor layer that controls the amount of light emitted from that emission layer portion. The emission layer may include an anode for the pixel, an OLED layer for the pixel, a pixel definition layer for the pixel, etc. Both the emission layer and the thin film transistor layer may have corresponding sub-pixels within the pixel. Each sub-pixel may be associated with light of a different color (e.g., red, green, and blue). The emission layer portion of a given sub-pixel does not necessarily need to have the same coverage area as the associated thin film transistor layer portion. Hereinafter, the term "sub-pixel" may sometimes be used to refer to the combination of an emission layer portion and a thin film transistor layer portion. Additionally, the thin film transistor layer may be considered to have thin film transistor sub-pixels (e.g., a portion of the thin film transistor layer that controls a corresponding emission region, sometimes referred to as a thin film transistor layer pixel, a thin film transistor layer sub-pixel, or simply a sub-pixel), and the emission layer may be considered to have emission layer sub-pixels (sometimes referred to as emission pixels, emission sub-pixels, or simply sub-pixels).

[0050] Figure 5A is Figure 3 A top view of an exemplary pixel array of the type shown. In Figure 5A it, the active area AA includes a pixel array having the same pattern up to the edges of the active area. Outside the active area, a gate driver circuit 20B-2 is formed.

[0051] As Figure 5A shown, the pixel array 28 includes emission sub-pixels 62, such as red (R), green (G), and blue (B) emission sub-pixels 62. Each emission sub-pixel 62 has a corresponding thin film transistor sub-pixel 64. Contacts 66 for each thin film transistor sub-pixel are shown, which illustrate how the thin film transistor sub-pixels are electrically connected to the corresponding emission sub-pixels. In Figure 5A it, each thin film transistor sub-pixel 64 controls one corresponding emission sub-pixel that overlaps that thin film transistor sub-pixel.

[0052] Figure 5B is Figure 5A A cross-sectional side view of the display shown. As Figure 5B shown, the thin film transistor sub-pixels 64 are formed within the substrate 26. The substrate 26 may include one or more dielectric layers (such as layers 26-1 and 26-2) and metallization layers that form the thin film transistor circuitry for operating the display. The thin film transistor sub-pixels 64 are formed on the dielectric layer 26-2. Each thin film transistor sub-pixel is electrically connected to and controls the corresponding emission sub-pixel 62. In Figure 5BIn the example, each emission sub-pixel 62 includes a corresponding anode 68 and an OLED layer 70 (e.g., a hole injection layer, a hole transport layer, an emission layer, a charge generation layer, an electron transport layer, an electron injection layer, etc.). This example is merely illustrative. Generally speaking, any desired type of display technology (e.g., OLED, LED, LCD, etc.) can be used to form each emission sub-pixel.

[0053] As Figure 5B shown, each emission sub-pixel 62 vertically overlaps (e.g., in the Z direction) with a corresponding thin-film transistor sub-pixel 64 that controls each emission sub-pixel. Outside the active area AA, a gate driver circuit 20B-2 is formed.

[0054] Utilizing Figure 5A and Figure 5B the arrangement, the gate driver circuit 20B is only formed in the inactive area of the display (e.g., no gate driver circuit is formed in the light-emitting active area).

[0055] In Figure 5A , the edge of the display can be parallel to the X-axis or the Y-axis. The front of the display can be parallel to the XY plane, such that the user of the device views the front of the display in the Z direction. In Figure 5A , the sub-pixels are angled with respect to the edge of the display (e.g., the edges of the sub-pixels are at non-zero, non-orthogonal angles with respect to the X-axis and the Y-axis). This example is merely illustrative. If desired, each individual sub-pixel can have an edge parallel to the edge of the display.

[0056] In Figure 6A , the thin-film transistor sub-pixels have a higher density (e.g., the number of sub-pixels per unit area) than the emission sub-pixels, which allows a gate driver circuit such as the gate driver circuit 20B-2 to be formed in the active area.

[0057] As Figure 6A shown, the density of the emission sub-pixels is uniform over the active area AA. To accommodate a uniform emission sub-pixel density on the display (while still having a gate driver circuit in the active area), the density of the thin-film transistor sub-pixels can be greater than the density of the emission sub-pixels. Thus, the thin-film transistor sub-pixels occupy a smaller coverage area than the emission sub-pixels. The thin-film transistor sub-pixels can be incorporated in the central part of the active area, thereby creating an area at the periphery of the active area where the emission sub-pixels can overlap with the gate driver circuit.

[0058] Figure 6A The emission sub-pixels in Figure 12The thin-film transistor pixels therein may be arranged at a second density (e.g., the number of thin-film transistor pixels per unit area) greater than the first density (e.g., at least 0.1% greater, at least 0.5% greater, at least 1% greater, at least 2% greater, at least 3% greater, at least 5% greater, at least 10% greater, etc.).

[0059] In Figure 6A the arrangement, the emission sub-pixels in the active area AA do not necessarily vertically overlap with their corresponding thin-film transistor pixels. As Figure 12 shown, each emission sub-pixel can be electrically connected to its corresponding thin-film transistor pixel through a corresponding conductive path 76. The conductive path may include one or more traces and one or more vias in the display substrate. The conductive path allows the position of the emission sub-pixel to be separated from the position of the thin-film transistor pixel. This allows the positions of the thin-film transistor pixels and the emission sub-pixels to be optimized independently, thereby improving the performance of the display.

[0060] As an example, the active area AA includes emission sub-pixels 62-1, 62-2, 62-3, and 62-4. The emission sub-pixel 62-1 is controlled by the thin-film transistor pixel 64-1 that does not vertically overlap. The emission sub-pixel 62-1 is electrically connected to the thin-film transistor pixel 64-1 through a corresponding conductive path 76. The emission sub-pixel 62-2 is controlled by the thin-film transistor pixel 64-2 that does not vertically overlap. The emission sub-pixel 62-2 is electrically connected to the thin-film transistor pixel 64-2 through a corresponding conductive path 76. The emission sub-pixel 62-3 is controlled by the thin-film transistor pixel 64-3 that does not vertically overlap. The emission sub-pixel 62-3 is electrically connected to the thin-film transistor pixel 64-3 through a corresponding conductive path 76. The emission sub-pixel 62-4 is controlled by the thin-film transistor pixel 64-4 that does not vertically overlap. The emission sub-pixel 62-4 is electrically connected to the thin-film transistor pixel 64-4 through a corresponding conductive path 76.

[0061] Separating the position of the thin-film transistor pixels from the position of the emission sub-pixels and increasing the density of the thin-film transistor pixels relative to the emission sub-pixels allows the gate driver circuit 20B-2 to overlap with the active area AA. As Figure 6A shown, the gate driver circuit 20B-2 extends a distance 34 into the active area AA. An additional portion of the gate driver circuit having a width 36 is formed in the inactive area of the display.

[0062] Figure 6B is Figure 6A a cross-sectional side view of the display shown. As Figure 6BAs shown, thin film transistor sub-pixels 64 are formed within substrate 26. Substrate 26 may include one or more dielectric layers (such as layers 26-1 and 26-2) and metallization layers, which form the thin film transistor circuitry for operating the display. Thin film transistor sub-pixels 64 are formed on dielectric layer 26-2. Each thin film transistor sub-pixel 64 is electrically connected to a corresponding emissive sub-pixel 62 and controls that corresponding emissive sub-pixel. In Figure 6B the example, each emissive sub-pixel 62 includes a corresponding anode 68 and an OLED layer 70. This example is merely illustrative. Generally, any desired type of display technology (e.g., OLED, LED, LCD, etc.) may be used to form each emissive sub-pixel.

[0063] As Figure 6B shown, conductive paths 76 allow each emissive sub-pixel 62 to not necessarily vertically overlap with the corresponding thin film transistor sub-pixel 64 that controls it. Some of the emissive sub-pixels in the emissive sub-pixels are laterally offset relative to their controlling thin film transistor sub-pixels.

[0064] Each conductive path 76 may be formed by any desired metal layer within the display. A metal layer already present in the display for other functions may be patterned to include portions that contribute to forming the conductive path. For example, the metal layer may be patterned to form a gate line, a data line, a pixel anode, a power line, and / or another desired display component in addition to forming at least a portion of the conductive path 76.

[0065] When the thin film transistor sub-pixels have a higher density than the emissive sub-pixels (as Figure 6A and Figure 6B shown), space may be made available within the substrate for additional components, such as the gate driver circuit 20B-2 and / or data lines in the fan-out region. As Figure 6B shown, the gate driver circuit 20B-2 is formed beneath some of the emissive sub-pixels at the periphery of the active region AA. The gate driver circuit (such as Figure 6B the circuit 20B-1 or the circuit 20B-2 in

[0066] Figure 6B ) may be formed using an integrated circuit or a thin film transistor circuit. Figure 6B The example of the gate driver circuit 20B-2 being formed beneath the emissive sub-pixels at the edge of the active region in Figure 4extends along the right edge of the active area in). However, this example is merely illustrative. Generally speaking, any desired portion of the active area may be free of thin-film transistor sub-pixels to accommodate additional components. For example, the left edge and / or right edge of the active area may be free of thin-film transistor sub-pixels to accommodate the gate driver circuit, the lower right rounded corner and / or lower left rounded corner of the active area may be free of thin-film transistor sub-pixels to accommodate data lines in the fan-out area, and / or the top edge and / or bottom edge of the active area may be free of thin-film transistor sub-pixels to accommodate the display driver circuit (e.g., Figure 4 circuit 20A in). As another example, the area free of thin-film transistor sub-pixels may be located in the central portion of the active area such that the area free of thin-film transistor sub-pixels is an island area laterally surrounded by thin-film transistor sub-pixels. Such an island area free of thin-film transistor sub-pixels may accommodate a light emitter.

[0067] If desired, as Figure 7 shown, multiple anodes 68 may be shorted together (e.g., by a conductive path such as conductive path 74). The shorted anodes may be located in the TFT-free area (e.g., overlapping with the gate driver circuit 20B-2 in Figure 7 or another desired component). If desired, the emitter sub-pixels having shorted anodes may also optionally overlap with thin-film transistor sub-pixels.

[0068] Shorting the anodes of multiple emitter sub-pixels allows a single thin-film transistor sub-pixel to control multiple emitter sub-pixels, which reduces the number of thin-film transistor sub-pixels required for the display. In one possible arrangement, adjacent emitter sub-pixels of the same color may have anodes shorted together.

[0069] As Figure 8 shown, the device 10 may include a sensor 13 mounted behind the display 14 (e.g., behind the active area of the display). Figure 8 is a top view of an exemplary display 14 having a sensor 13 mounted behind the active area (AA) of the display. In addition to the sensor components, the sensor 13 may sometimes also include a light-emitting component. As an illustrative example, the sensor 13 may be a proximity sensor that includes a light source in addition to a light sensor. The light source is configured to emit light from below the active area of the display through the active area of the display. The light sensor is configured to sense the reflection of the emitted light passing through the active area of the display to the light sensor. The light source may emit a series of pulses of light at a desired frequency. Each pulse has a desired duration. The properties of the pulses (e.g., frequency, duration, wavelength, intensity, etc.) may sometimes be referred to as the excitation mode of the emitter.

[0070] To reduce the impact of sensor 13 on the operation of display 14, sensor 13 may include a light emitter that operates using non-visible wavelength light. For example, sensor 13 may include an infrared (IR) light emitter or an ultraviolet (UV) light emitter, and may have a corresponding light sensor (e.g., an IR light sensor for an IR light emitter or a UV light sensor for a UV light emitter). Using a light emitter that operates using non-visible wavelength light may prevent the light emitted by the light emitter from being directly observable by a viewer of display 14. However, the light emitter may still cause visible artifacts in display 14.

[0071] As previously mentioned, display 14 includes a thin-film transistor circuit, which may include polysilicon thin-film transistors, semiconductor oxide thin-film transistors (such as indium gallium zinc oxide (IGZO) transistors), and / or thin-film transistors formed from other semiconductors. Additionally, display 14 may include one or more organic layers that form the organic light-emitting diode pixels in an organic light-emitting diode display. One or more materials in the thin-film transistor circuit and the organic layer that form pixel 22 may be photosensitive to light of non-visible wavelengths. Thus, even if sensor 13 includes a light emitter that uses non-visible wavelength light, the emission of non-visible wavelength light may cause display artifacts in a local region of the display that overlaps with the light emitter.

[0072] Display artifacts caused by the emission of the light emitter in sensor 13 may include making the region of the display above the light emitter have a different brightness or color than the surrounding portion of the display. The artifacts may be static or may be transient (e.g., may quickly appear and disappear to have a flickering appearance). The artifacts are more visible in a dark ambient light environment than in a bright ambient light environment.

[0073] Most of the artifacts caused by the interaction between the invisible light emitter and the display may be caused by the interaction between the invisible light and the thin-film transistors of the thin-film transistor sub-pixels. Thus, to reduce the artifacts caused by the light emitter in sensor 13, the display may have regions that do not include thin-film transistor sub-pixels (but still include emissive sub-pixels), sometimes referred to as TFT-free regions or TFT-free zones. The light emitter emits light through the TFT-free regions. This allows the emissive sub-pixel resolution to be undisturbed over the active area (such that the display has a uniform appearance), minimizes the border requirements of the electronic device (since sensor 13 is positioned below the active area of the display rather than occupying additional space outside the display), and reduces the artifacts caused by the light emitter such that the light emitter is undetectable to the viewer.

[0074] Figure 9 is a top view of an exemplary display having a TFT-free zone that overlaps with sensor 13 (having a light emitter). As Figure 9As shown, the display 14 includes an array of emissive sub-pixels distributed over the area 102. The emissive sub-pixels have a uniform density and a uniform distribution over the area 102. In Figure 9 the example, the area 102 has four sides with rounded corners. This example is merely illustrative. The area 102 is the active area AA of the display, and the active area may have any desired coverage area.

[0075] Thin-film transistor sub-pixels are formed in the area 104. The density of the thin-film transistor sub-pixels is greater than the density of the emissive sub-pixels. Accordingly, the total coverage area of the area 104 is smaller than the total coverage area of the area 102. The smaller coverage area 104 allows additional components such as the gate driver circuit 20B-1 and the gate driver circuit 20B-2 to be formed at the edge of the active area within the active area. Additionally, the area 104 has a TFT-free area 106 (e.g., an island-like area surrounded laterally by the area 104) that houses the sensor 13. Light can be emitted by the light emitter through the TFT-free area 106.

[0076] In Figure 9 , the thin-film transistor sub-pixels that control the emissive sub-pixels within the TFT-free area 106 are merged in the area 108 that is adjacent to the TFT-free area 106 and within the same pixel row as the TFT-free area. Since the thin-film transistor sub-pixels have a uniform density, the area 104 has a greater width 110 in the rows that include the TFT-free area 106 than the width 112 in the rows that do not include the TFT-free area 106. The width 110 can be at least 0.1%, at least 0.5%, at least 1%, at least 5%, at least 10%, etc. greater than the width 112.

[0077] In other words, the thin-film transistor sub-pixels in the area 108 are laterally offset with respect to the emissive sub-pixels they control within the TFT-free area 106. This arrangement is similar to Figure 6A and Figure 6B shown, except that the sensor 13 (and its light emitter) is used instead of the gate driver circuit 20B-2 as the component that overlaps with the emissive sub-pixels in the TFT-free area.

[0078] Figure 9 The example of the area 108 (having TFT sub-pixels that control the emissive sub-pixels in the TFT-free area 106) being positioned adjacent to the TFT-free area 106 in Figure 10 is merely illustrative. In another possible arrangement shown in

[0079] In yet another possible arrangement, the density of different regions of the TFT sub-pixels is different. As Figure 11 shown, the TFT sub-pixel may have a first portion 104-1 that has a first density (the number of TFT sub-pixels per unit area) higher than that of the emission sub-pixel. The TFT sub-pixel also has a second portion 104-2 that has a second density higher than the first density of the portion 104-1. As shown, the second portion 104-2 is aligned with the TFT-less region 106 (e.g., the row including the TFT-less region 106 is part of the second portion 104-2).

[0080] This type of arrangement allows the TFT covering region 104 to have a uniform width in the portion including the TFT-less region 106 and the portion not including the TFT-less region 106 ( Figure 9 different from where the increased width is caused by the TFT-less region).

[0081] The density of the thin-film transistor sub-pixels in the portion 104-2 may be at least 0.1%, at least 0.5%, at least 1%, at least 2%, at least 3%, at least 5%, at least 10%, etc. greater than the density of the thin-film transistor sub-pixels in the portion 104-1.

[0082] In Figure 11 similar to in Figure 9 the thin-film transistor sub-pixels that control the emission sub-pixels within the TFT-less region 106 are merged in the region 108 adjacent to the TFT-less region and within the same pixel row as the TFT-less region.

[0083] In some cases, the gate driver circuit 20B may include one or more dummy components. The dummy components can be used to balance the load and improve uniformity. If needed, as Figure 12 shown, the thin-film transistor sub-pixels that control the emission sub-pixels within the TFT-less region 106 can be positioned in the region 108 to replace the dummy components of the gate driver circuit 20B. Thus, the region 108 having the thin-film transistor sub-pixels that control the emission sub-pixels within the TFT-less region 106 is inserted between the first portion 114 and the second portion 116 of the gate driver circuit 20B-2. The thin-film transistor sub-pixels in the region 108 can balance the load and improve uniformity, similar to the dummy components of the gate driver circuit. However, using thin-film transistor sub-pixels in the region 108 instead of dummy components may be a more optimized use of the covering region within the display.

[0084] In Figure 9In the example, the density of thin-film transistor (TFT) pixels increases over all of the coverage regions 104 of the TFT pixels. This allows the gate driver circuitry 20B to overlap the active region along the entire left and right edges of the display. This example is merely illustrative. The rounded corners of the display may be a limiting factor due to the invalid border requirements of the display. Thus, in Figure 13 In another possible arrangement, as shown in , the TFT pixels have a first portion 104-1, where the density of the TFT pixels is the same as the density of the emissive sub-pixels. Thus, the gate driver circuitry does not overlap the active region in portion 104-1. However, the TFT pixels have a second portion 104-2 at the top and bottom of the display, where the density of the TFT pixels is greater than the density of the emissive sub-pixels (e.g., at least 0.1% greater, at least 0.5% greater, at least 1% greater, at least 2% greater, at least 3% greater, at least 5% greater, at least 10% greater, etc.). The TFT pixels are incorporated in portion 104-2 at the center of the display such that there are TFT-less regions 106 in each of the four rounded corners of the active region. The TFT-less regions in the rounded corners can be used to accommodate additional components, such as the gate driver circuitry.

[0085] If not careful, the light source operating through the display may cause heating in the TFT pixels, and this heating can damage the TFT pixels. To mitigate the heating that causes damage to the display, the display may include a transparent (transparent to the type of light emitted by the light source) and thermally diffusive layer or a patterned layer that does not transmit light from the light source above the light source.

[0086] Figure 14 FIG. Figure 14 is a cross-sectional side view of a display having a thermally diffusive layer. As shown, the thermally diffusive layer 206 can be inserted between adjacent layers 26-2 and 26-3 of the display substrate. As an example, each of the dielectric layers 26-1, 26-2, and 26-3 can be formed of polyimide. As previously discussed, the TFT pixels 64 are removed in the TFT-less regions 106. Although not explicitly shown in Figure 14 FIG. Figure 14 , the TFT-less regions 106 can include emissive sub-pixels 62, as discussed in connection with Figure 9 FIG. Figure 9 .

[0087] A light source 204 (e.g., an infrared laser as part of sensor 13) can be positioned below the TFT region 106 and emit light through the TFT region 106. However, the infrared light emitted by the light source 204 can cause heat that damages the TFT pixels 64. The thermally diffusive layer 206 (which can be formed of a conductive material) can have a high thermal conductivity (e.g., greater than 0.2 Wm -1 K -1 −1, greater than 0.5 Wm -1 −1 K -1 −1, greater than 1.0 Wm-1 K -1 etc.), dissipate heat within the high thermal conductivity diffusion display and prevent damage within the display. In order not to have an adverse effect on the performance of the sensor 13, the thermal diffusion layer 206 may have high transparency to light of the wavelength emitted by the light source 204. For example, when the light source 204 emits infrared light, the thermal diffusion layer 206 may have high transparency to infrared light (e.g., greater than 80%, greater than 90%, greater than 95%, etc.). The thermal diffusion layer 206 may be formed of indium tin oxide or any other desired material.

[0088] Figure 14 Also shown is how the display may include a cathode 202 for pixels in the display. As Figure 14 shown, the cathode 202 may be removed in the non-TFT region 106 to improve the transmission of light from the light source 204 through the display in the non-TFT region 106.

[0089] In Figure 15 another possible arrangement shown, a patterned light-blocking metal layer 208 is formed between the substrate layers 26-2 and 26-3. The light-blocking metal layer 208 may block or reflect light from the light source 204, thereby preventing light from reaching sensitive components in the display, such as thin film transistor pixels 64. The light-blocking metal layer may have low transparency to light of the wavelength emitted by the light source 204. For example, when the light source 204 emits infrared light, the light-blocking metal layer 208 may have low transparency to infrared light (e.g., less than 20%, less than 10%, less than 5%, etc.). The light-blocking metal layer 208 is patterned to have an opening aligned with the non-TFT region 106. Thus, some light from the light source 204 may pass through the opening in the light-blocking metal layer 208 (and the rest of the display), while the light-blocking metal layer 208 blocks light from reaching sensitive components in the display.

[0090] In Figure 16 yet another possible arrangement shown, a patterned inorganic reflector layer 210 is formed between the substrate layers 26-2 and 26-3. The inorganic reflector layer 210 may block light from the light source 204 from reaching sensitive components in the display, such as thin film transistor pixels 64. The inorganic reflector layer may have low transparency to light of the wavelength emitted by the light source 204. For example, when the light source 204 emits infrared light, the inorganic reflector layer 210 may have low transparency to infrared light (e.g., less than 20%, less than 10%, less than 5%, etc.). The inorganic reflector layer 210 is patterned to have an opening aligned with the non-TFT region 106. Thus, some light from the light source 204 may pass through the opening in the inorganic reflector layer 210 (and the rest of the display), while the inorganic reflector layer 210 blocks light from reaching sensitive components in the display.

[0091] Figures 14 to 16The example where layers 206 - 210 are formed between polyimide layers is merely illustrative. Generally speaking, layers 206 - 210 can be formed at any desired position within the display stack (e.g., below the bottom substrate layer, between substrate layer 26 - 2 and thin - film transistor sub - pixels 64, etc.).

[0092] According to one embodiment, an electronic device is provided that includes: a plurality of pixels arranged in a light - emitting region, each pixel of the plurality of pixels including an emissive sub - pixel and a thin - film transistor sub - pixel that controls the emissive sub - pixel, the emissive sub - pixel having a first number of emissive sub - pixels per unit area, the thin - film transistor sub - pixel having a second number of thin - film transistor sub - pixels per unit area, and the second number being greater than the first number; a region within the plurality of pixels that includes a first subset of the emissive sub - pixels and does not contain any thin - film transistor sub - pixels; and a light source that emits light through the region within the plurality of pixels.

[0093] According to another embodiment, a second subset of the thin - film transistor sub - pixels outside the region controls the first subset of the emissive sub - pixels within the region.

[0094] According to another embodiment, the second subset of the thin - film transistor sub - pixels is adjacent to the region.

[0095] According to another embodiment, the thin - film transistor sub - pixels are arranged in a region that has a first width in a first part that overlaps the region in the first direction and a second width in a second part that does not overlap the region in the first direction, and the first width is greater than the second width.

[0096] According to another embodiment, the second subset of the thin - film transistor sub - pixels is not adjacent to the region.

[0097] According to another embodiment, the second subset of the thin - film transistor sub - pixels includes at least one thin - film transistor sub - pixel adjacent to the perimeter of the light - emitting region.

[0098] According to another embodiment, the electronic device includes a gate driver circuit positioned at the edge of the light - emitting region, and the second subset of the thin - film transistor sub - pixels includes at least one thin - film transistor sub - pixel interposed between a first part and a second part of the gate driver circuit.

[0099] According to another embodiment, the thin - film transistor sub - pixel has a first part with a second number of thin - film transistor sub - pixels per unit area and a second part with a third number of thin - film transistor sub - pixels per unit area.

[0100] According to another embodiment, the first portion overlaps the region in a first direction, and the second portion does not overlap the region in the first direction.

[0101] According to another embodiment, the electronic device includes: a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and a gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, at least a portion of the gate driver circuit being positioned in the light-emitting region.

[0102] According to another embodiment, a second subset of the emissive sub-pixels overlaps the gate driver circuit, and a third subset of the thin-film transistor sub-pixels controls the second subset of the emissive sub-pixels.

[0103] According to another embodiment, the third subset of the thin-film transistor sub-pixels does not overlap the gate driver circuit.

[0104] According to another embodiment, the thin-film transistor sub-pixels are arranged in a region, and a third subset of the thin-film transistor sub-pixels is merged at an edge of the region.

[0105] According to another embodiment, the light source is an infrared light source.

[0106] According to another embodiment, the emissive sub-pixels have a uniform density over the light-emitting region.

[0107] According to another embodiment, the thin-film transistor sub-pixels have a non-uniform density over the light-emitting region.

[0108] According to another embodiment, each emissive sub-pixel includes a corresponding anode, and anodes of at least some of the emissive sub-pixels in the first subset of the emissive sub-pixels are shorted to at least one additional anode.

[0109] According to another embodiment, the electronic device includes a thermal diffusion layer interposed between the light source and the plurality of pixels, the thermal diffusion layer being transparent to light emitted by the light source.

[0110] According to another embodiment, the electronic device includes a metal layer interposed between the light source and the plurality of pixels, the metal layer blocking light emitted by the light source, and the metal layer having an opening overlapping the light source.

[0111] According to another embodiment, the electronic device includes an inorganic reflector layer interposed between the light source and the plurality of pixels, the inorganic reflector layer blocking light emitted by the light source, and the inorganic reflector layer having an opening overlapping the light source.

[0112] According to one embodiment, a display is provided that includes: a plurality of pixels arranged in a light-emitting region having rounded corners, each pixel of the plurality of pixels including an emission sub-pixel and a thin-film transistor sub-pixel that controls the emission sub-pixel, and the emission sub-pixels having a uniform density over the light-emitting region; a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and a gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, wherein in a first subset of rows of the emission sub-pixels that include rounded corners, the emission sub-pixels overlap with the gate driver circuit along an edge of the light-emitting region, and in a second subset of rows of the emission sub-pixels that do not include rounded corners, the emission sub-pixels do not overlap with the gate driver circuit along the edge of the light-emitting region.

[0113] According to one embodiment, an electronic device is provided that includes: a display including a plurality of pixels arranged in a light-emitting region, each pixel of the plurality of pixels including an emission sub-pixel and a thin-film transistor sub-pixel that controls the emission sub-pixel, and the emission sub-pixels having a uniform density over the light-emitting region; and a proximity sensor including a light source that emits light through a portion of the plurality of pixels that does not include thin-film transistor sub-pixels.

[0114] According to another embodiment, the display further includes: a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and a gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, at least a portion of the gate driver circuit being positioned in the light-emitting region.

[0115] The foregoing is merely illustrative, and various modifications may be made by those skilled in the art without departing from the scope and essence of the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

Claims

1. An electronic device, comprising: a plurality of pixels arranged in a light-emitting region, wherein each pixel of the plurality of pixels includes an emission sub-pixel and a thin-film transistor sub-pixel for controlling the emission sub-pixel, wherein the emission sub-pixel has a first number of emission sub-pixels per unit area, wherein the thin-film transistor sub-pixel has a second number of thin-film transistor sub-pixels per unit area, and wherein the second number is greater than the first number; a region among the plurality of pixels, the region including a first subset of the emission sub-pixels and containing no thin-film transistor sub-pixels; and a light source that emits light through the region among the plurality of pixels.

2. The electronic device according to claim 1, wherein a second subset of the thin-film transistor sub-pixels outside the region controls the first subset of the emission sub-pixels in the region.

3. The electronic device according to claim 2, wherein the second subset of the thin-film transistor sub-pixels is adjacent to the region.

4. The electronic device according to claim 3, wherein the thin-film transistor sub-pixels are arranged in a region that has a first width in a first part overlapping with the region in the first direction and a second width in a second part not overlapping with the region in the first direction, and wherein the first width is greater than the second width.

5. The electronic device according to claim 2, wherein the second subset of the thin-film transistor sub-pixels is not adjacent to the region.

6. The electronic device according to claim 2, wherein the second subset of the thin-film transistor sub-pixels includes at least one thin-film transistor sub-pixel adjacent to a periphery of the light-emitting region.

7. The electronic device according to claim 2, further comprising: a gate driver circuit positioned at an edge of the light-emitting region, wherein the second subset of the thin-film transistor sub-pixels includes at least one thin-film transistor sub-pixel interposed between a first part and a second part of the gate driver circuit.

8. The electronic device according to claim 1, wherein the thin-film transistor sub-pixels have a first part having the second number of thin-film transistor sub-pixels per unit area and a second part having a third number of thin-film transistor sub-pixels per unit area.

9. The electronic device according to claim 8, wherein the first part overlaps with the region in the first direction, and wherein the second part does not overlap with the region in the first direction.

10. The electronic device according to claim 1, further comprising: a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and a gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, wherein at least a part of the gate driver circuit is positioned in the light-emitting region.

11. The electronic device according to claim 10, wherein a second subset of the emission sub-pixels overlaps with the gate driver circuit, and wherein a third subset of the thin-film transistor sub-pixels controls the second subset of the emission sub-pixels.

12. The electronic device according to claim 11, wherein the third subset of the thin-film transistor sub-pixels does not overlap with the gate driver circuit.

13. The electronic device according to claim 12, wherein the thin-film transistor sub-pixels are arranged in a region, and wherein the third subset of the thin-film transistor sub-pixels is merged at an edge of the region.

14. The electronic device according to claim 1, wherein the light source is an infrared light source.

15. The electronic device according to claim 1, wherein the emission sub-pixels have a uniform density over the light-emitting region.

16. The electronic device according to claim 15, wherein the thin-film transistor sub-pixels have a non-uniform density over the light-emitting region.

17. The electronic device according to claim 1, wherein each emission sub-pixel includes a corresponding anode, and wherein the anodes of at least some of the emission sub-pixels in the first subset of the emission sub-pixels are shorted to at least one additional anode.

18. The electronic device according to claim 1, further comprising: a thermal diffusion layer interposed between the light source and the plurality of pixels, wherein the thermal diffusion layer is transparent to the light emitted by the light source.

19. The electronic device according to claim 1, further comprising: a metal layer interposed between the light source and the plurality of pixels, wherein the metal layer blocks the light emitted by the light source, and wherein the metal layer has an opening overlapping with the light source.

20. The electronic device according to claim 1, further comprising: an inorganic reflector layer interposed between the light source and the plurality of pixels, wherein the inorganic reflector layer blocks the light emitted by the light source, and wherein the inorganic reflector layer has an opening overlapping with the light source.

21. A display, comprising: a plurality of pixels arranged in a light-emitting region, wherein the light-emitting region has rounded corners, wherein each pixel of the plurality of pixels includes an emission sub-pixel and a thin-film transistor sub-pixel controlling the emission sub-pixel, and wherein the emission sub-pixels have a uniform density over the light-emitting region; a plurality of data lines; a plurality of gate lines; a display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; and A gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, wherein in a first subset of rows of the emitting sub-pixels that include the rounded corners, the emitting sub-pixels overlap with the gate driver circuit along an edge of the light-emitting region, and wherein in a second subset of rows of the emitting sub-pixels that do not include the rounded corners, the emitting sub-pixels do not overlap with the gate driver circuit along the edge of the light-emitting region.

22. An electronic device, comprising: A display including a plurality of pixels arranged in a light-emitting region, wherein each of the plurality of pixels includes an emitting sub-pixel and a thin-film transistor sub-pixel that controls the emitting sub-pixel, and wherein the emitting sub-pixels have a uniform density over the light-emitting region; And A proximity sensor including a light source that emits light through a portion of the plurality of pixels that does not include the thin-film transistor sub-pixels.

23. The electronic device according to claim 22, wherein the display further comprises: A plurality of data lines; A plurality of gate lines; A display driver circuit configured to provide data to the plurality of pixels using the plurality of data lines; And A gate driver circuit configured to provide control signals to the plurality of pixels using the plurality of gate lines, wherein at least a portion of the gate driver circuit is positioned in the light-emitting region.

Images