WO2020015446A1 - 显示面板及其驱动方法、显示装置 - Google Patents

显示面板及其驱动方法、显示装置 Download PDF

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Publication number
WO2020015446A1
WO2020015446A1 PCT/CN2019/087457 CN2019087457W WO2020015446A1 WO 2020015446 A1 WO2020015446 A1 WO 2020015446A1 CN 2019087457 W CN2019087457 W CN 2019087457W WO 2020015446 A1 WO2020015446 A1 WO 2020015446A1
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WIPO (PCT)
Prior art keywords
display
display area
pixel
sub
display panel
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PCT/CN2019/087457
Other languages
English (en)
French (fr)
Inventor
李忠孝
赵文卿
朱劲野
陈小川
Original Assignee
京东方科技集团股份有限公司
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Filing date
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/622,978 priority Critical patent/US11403977B2/en
Priority to EP19837465.4A priority patent/EP3825754B1/en
Publication of WO2020015446A1 publication Critical patent/WO2020015446A1/zh

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    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
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    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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Definitions

  • Embodiments of the present disclosure relate to a display panel, a driving method thereof, and a display device.
  • the 3D display device mainly includes an auxiliary 3D display device and a naked-eye 3D display device.
  • the auxiliary 3D display device requires the user to wear glasses (for example, chromatic aberration glasses, polarized glasses or shutter glasses) or a helmet in order to view the left eye image and the right eye. The images are fed into the left and right eyes of the user, respectively.
  • the discomfort caused by glasses or helmets prevented the further development of auxiliary 3D display devices and prompted the industry to switch to the development of naked-eye 3D display devices.
  • At least one embodiment of the present disclosure provides a display panel including a display sub-pixel.
  • the display sub-pixel includes a first display area located in a middle portion and second display areas located on both sides of the first display area in a first direction; and in a process of displaying one sub-pixel of a picture, the first The brightness of the two display areas is greater than the brightness of the first display area.
  • the display panel is a liquid crystal display panel
  • the display sub-pixel includes a pixel electrode and a common electrode located in the first display area and the second display area, A portion of the pixel electrode located in the first display region and a portion of the pixel electrode located in the second display region are electrically connected to each other, and a portion of the common electrode located in the first display region and the second electrode are located in the second display region.
  • Portions of the common electrode in the display area are electrically connected to each other; and when the same driving voltage is applied to the portion of the pixel electrode located in the first display area and the portion of the pixel electrode located in the second display area, The liquid crystal driving electric field formed by the pixel electrode and the common electrode in the second display region is not equal to the liquid crystal driving electric field formed in the first display region.
  • the A liquid crystal driving electric field formed by the pixel electrode and the common electrode in the second display region is smaller than a liquid crystal driving electric field formed in the first display region.
  • the display sub-pixel includes a liquid crystal layer and a dielectric material layer, and the dielectric material layer is disposed between the liquid crystal layer and the pixel electrode or the common electrode, And includes a first dielectric unit located in the first display area and a second dielectric unit located in the second display area; and an equivalent dielectric constant of the second dielectric unit is smaller than that of the first dielectric unit, and the like Effective dielectric constant.
  • a thickness of the second dielectric unit is equal to a thickness of the first dielectric unit, and a dielectric constant of the second dielectric unit is smaller than that of the first dielectric unit. Dielectric constant.
  • the A liquid crystal driving electric field formed by the pixel electrode and the common electrode in the second display region is larger than a liquid crystal driving electric field formed in the first display region.
  • At least one of the pixel electrode and the common electrode is a comb electrode, and a pitch of a portion of the comb electrode in the second display region is smaller than A pitch of a portion of the comb-shaped electrode in the first display region.
  • the display panel is an organic light emitting diode display panel
  • the display sub-pixels include organic light emitting diodes located in the first display area and the second display area, A portion of the organic light emitting diode located in the first display area and a portion of the organic light emitting diode located in the second display area are electrically connected to each other and configured to receive the same driving voltage;
  • the same driving voltage is applied to a portion of the organic light emitting diode and a portion of the organic light emitting diode located in the second display region, the density of the driving current formed by the organic light emitting diode in the second display region is greater than A density of a driving current formed by the first display region.
  • a resistivity of a portion of the organic light emitting diode in the second display region is smaller than a resistivity of a portion in the first display region.
  • the display sub-pixel further includes a light dispersing structure disposed on a light-exiting side in the first display area, and the light dispersing structure is configured to transmit the light from the first The light emitted from the display area is diffused into the second display area.
  • the display sub-pixel includes a common driving circuit for driving the first display area and the second display area simultaneously.
  • the display sub-pixel includes at least partially independent first driving circuits and second driving circuits for driving the first display area and the second display area, respectively.
  • the display sub-pixel includes a first pixel electrode located in the first display area and a second pixel electrode located in the second display area; the first pixel The electrode and the second pixel electrode are insulated from each other; and the first pixel electrode and the second pixel electrode are electrically connected to the first driving circuit and the second driving circuit, respectively.
  • the brightness of the second display area is 1.05 to 1.25 times the brightness of the first display area.
  • a size of the second display area in the first direction is smaller than a size of the display sub-pixel in the first direction; and the second display The ratio of the size of the region in the first direction to the size of the display sub-pixel in the first direction is 0.01-0.5.
  • a size of the second display area in the first direction is smaller than or equal to a size of the light transmitting area in the first direction; and the second The ratio of the size of the display area in the first direction to the size of the light transmitting area in the first direction is 0.7-1.
  • the display panel includes a parallax barrier and a plurality of the display sub-pixels; the parallax barrier is disposed on a light exit side of the display sub-pixel and is included in the first Light-shielding regions and light-transmitting regions alternately arranged in the direction; and a plurality of the display sub-pixels are arranged side by side in the first direction.
  • At least one embodiment of the present disclosure also provides a display device including a display panel provided by at least one embodiment of the present disclosure.
  • At least one embodiment of the present disclosure further provides a driving method of driving a display panel, comprising: applying a first display data voltage to a first display area of a display sub-pixel of the display panel; and applying a first display data voltage to the display panel; A second display data voltage is applied to the second display area of the display sub-pixel.
  • the brightness of the second display area is greater than the brightness of the first display area; the first display area is located in the middle portion of the display sub-pixel, and the second display The regions are located on both sides of the first display region in a first direction.
  • the first display data voltage is different from the second display data voltage;
  • the display sub-pixels include means for driving the first display area and At least partially independent first and second driving circuits of the second display area; the first display data voltage is applied in the first display area through the first driving circuit, and the second A display data voltage is applied to the second display area through the second driving circuit.
  • the first display data voltage is the same as the second display data voltage.
  • the display panel includes a parallax barrier and a plurality of the display sub-pixels; the parallax barrier is disposed on a light-exit side of the display sub-pixel and is included in the display sub-pixel.
  • the light-shielding regions and the light-transmitting regions alternately arranged in the first direction; and a plurality of the display sub-pixels are arranged side by side in the first direction.
  • 1A is a schematic cross-sectional view of a display panel
  • FIG. 1B is a schematic diagram for illustrating that a user observes that a width of a black matrix unit is different in a case where the user is located at different positions;
  • FIG. 2A is a schematic plan view of a display panel provided by at least one embodiment of the present disclosure.
  • 2B is a schematic cross-sectional view of a display panel provided by at least one embodiment of the present disclosure
  • FIG. 2C is a schematic diagram showing that a user observes that the widths of the black matrix units are different under different positions
  • FIG. 3 is a schematic plan view of a display sub-pixel provided by at least one embodiment of the present disclosure.
  • 4A is a schematic diagram of a display sub-pixel provided by at least one embodiment of the present disclosure.
  • 4B is a comb electrode provided by at least one embodiment of the present disclosure.
  • 4C is a combined structure of a pixel electrode and a common electrode provided by at least one embodiment of the present disclosure
  • 5A is a schematic diagram of another display sub-pixel provided by at least one embodiment of the present disclosure.
  • 5B is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • 5C is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • FIG. 8A is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • FIG. 8B is a schematic diagram of still another display sub-pixel provided by at least one embodiment of the present disclosure.
  • FIG. 9 is an exemplary block diagram of a display device provided by at least one embodiment of the present disclosure.
  • FIG. 10 is an exemplary flowchart of a driving method of a display panel provided by at least one embodiment of the present disclosure.
  • FIG. 1A is a schematic cross-sectional view of a display panel.
  • the display panel includes a display array layer and a parallax barrier 570 disposed on a light exit side of the display array layer.
  • the display array layer and the parallax barrier 570 are stacked in the third direction D3, for example.
  • the display array layer includes first display pixels 511 and second display pixels 512 alternately arranged in the first direction D1, and a black matrix unit 580 disposed between the first display pixels 511 and the second display pixels 512.
  • multiple first display pixels 511 may be used to display multiple first image pixels corresponding to the first image, and multiple first image pixels may be combined to obtain a first image; multiple second display pixels 512 may be used separately.
  • a second image can be obtained by combining a plurality of second image pixels corresponding to the second image and a plurality of second image pixels.
  • Parallax between the first image and the second image can be used to implement stereoscopic display.
  • the parallax barrier 570 includes light shielding regions 571 and light transmitting regions 572 that are alternately arranged in the first direction.
  • the first display pixel 511 and the second display pixel 512 respectively overlap with the front projection portion of the light-shielding region 571 on the display array layer and are exposed from the light-transmitting region 572.
  • the light emitted by the first display pixel 511 is received by the user's left eye, and the light emitted by the second display pixel 512 is received by the user's right eye.
  • the user can feel a three-dimensional (3D) image, and thus the display panel shown in FIG. 1A has a 3D display function.
  • the inventor of the present disclosure noticed in the research that the human eye viewing area (eyebox) 550 of the 3D display panel shown in FIG. 1A is small, and thus results in a case where the user's eyes are located outside the human eye viewing area 550, Moiré and image crosstalk (a user's left eye sees an image corresponding to the right eye) may occur. In the case that the moire and image crosstalk are too serious, the human eye will not observe the 3D image. At this time, the area where the user's eyes are located is called a dead zone. In order to view an ideal 3D image, the user's eyes need to remain in the human eye observation area 550 at all times, thereby reducing the user experience.
  • the response time of the eye tracking device makes it difficult for the eye tracking device to adjust the position of the human eye observation area 550 based on the position of the user in real time;
  • the human eye may leave the human eye observation area 550 before the eye tracking device adjusts the position of the human eye observation area 550, and as a result, the human eye may observe severe moiré or image crosstalk. 3D image, no 3D image is even observed.
  • the human eye observation area 550 of the 3D display panel is described below with reference to FIG. 1B and taking the moire problem as an example.
  • the observation angle when the user's eyes are at the position VP2 is not equal to the observation angle when the user's eyes are at the position VP1.
  • the human eyes observe a part of the black matrix unit 580. And part of the second display pixel 512; and when the human eye is located at the position VP2, the human eye only observes the second display pixel 512, but not the black matrix unit 580. Because the area of the display array layer corresponding to the black matrix unit 580 has no light exiting, even if the seen pixels display the same content, the light intensity received by the human eye at the position VP2 is greater than the light intensity received by the human eye at the position VP1.
  • the human eye observation area may be determined based on the maximum value of the change in brightness that is allowed by the human eye. In order to improve the user experience, the human eye observation area needs to be increased.
  • Embodiments of the present disclosure provide a display panel, a driving method thereof, and a display device.
  • the display panel includes a display sub-pixel and a parallax barrier.
  • the parallax barrier is disposed on the light-exit side of the display sub-pixel and includes light-shielding regions and light-transmitting regions that are alternately arranged in the first direction.
  • the display sub-pixel includes a first display area located in the middle portion and a second display area located in the peripheral portion. During the process of displaying one sub-pixel of the sub-pixel display screen, the brightness of the second display area is greater than the brightness of the first display area.
  • the first display area located in the middle portion and the second display area located in the peripheral portion for example, on both sides of the first display area in the first direction
  • making the brightness of the second display area greater than that of the first display area Brightness can increase the width of the black matrix unit that is allowed to be seen by the human eye, thereby increasing the size of the observation area of the human eye.
  • FIG. 2A and FIG. 2B respectively show a schematic plan view and a cross-sectional view of a display panel 100 provided by at least one embodiment of the present disclosure.
  • the display panel 100 includes a display sub-pixel 110 and a parallax barrier 170 (the parallax barrier is not shown in FIG. 2A) disposed on the light-exit side of the display sub-pixel 110;
  • the parallax barrier 170 includes light-shielding regions 171 and light-transmitting regions 172 that are alternately arranged in the first direction D1 and repeatedly arranged in one direction D1 and the second direction D2, thereby forming a display array layer.
  • the first direction D1 is, for example, a horizontal direction, that is, a lateral direction
  • the second direction D2 is, for example, a vertical direction that is perpendicular to the first direction D1.
  • the sizes of the light-shielding region 171 and the light-transmitting region 172 in the first direction D1 and the distance between the parallax barrier 170 and the display sub-pixel 110 in the third direction D3 may be the same as the related designs, thereby making the display panel Parameters such as the working distance of 100 (for example, the distance between the viewing position of the display panel 100 and the light-emitting surface of the display panel 100) are the same as those of the related display panel (for example, the display panel shown in FIG. 1A).
  • the third direction D3 is, for example, a direction perpendicular to the first direction D1 and the second direction D2.
  • the display sub-pixel 110 includes a first display area 111 located in a middle portion in a first direction D1, a second display area 112 located in a peripheral portion, and a second display area 112 disposed away from the first display area 112.
  • the second display area 112 may be disposed on both sides of the first display area 111 in the first direction D1, for example, symmetrically with respect to the central axis of the display sub-pixel 110 in the first direction D1, which is in the first direction D1
  • the central axis extends, for example, in the second direction D2.
  • each display sub-pixel 110 (the first display area 111 and the second display area 112 of each display sub-pixel 110) is used to display one sub-pixel of a display screen.
  • the color of the light emitted from the first display region 111 and the second display region 112 is the same, and the polarization states of the light emitted from the first display region 111 and the second display region 112 are the same.
  • three adjacent display sub-pixels 110 in the first direction D1 can emit red light, green light, and blue light, respectively, to obtain a pixel in combination, but the embodiment of the present disclosure is not limited thereto. Compared to FIG. 2A and FIG.
  • the second display area 112 in another example, in addition to the second display area 112 being disposed on both sides of the first display area 111 in the first direction D1, the second display area 112 may be further disposed in the second direction.
  • the direction D2 is disposed on both sides of the first display area 111.
  • the second display area 112 may also be symmetrically disposed with respect to the center axis of the display sub-pixel 110 in the second direction D2 (the center in the second direction D2 The axis extends, for example, in the first direction D1), in this example, the first display area 111 is surrounded by the second display area 112.
  • the size w1 of the first display area 111 in the first direction D1 and the size w2l + w2r of the second display area 112 in the first direction D1 can be set according to actual application requirements. Implementation of the present disclosure The examples do not specifically limit this.
  • the size of the second display area 112 in the first direction D1 is smaller than the size of the display sub-pixel 110 in the first direction D1; the size of the second display area 112 in the first direction D1 is smaller than that of the light transmitting area 172 in the first direction Dimensions in direction D1.
  • the ratio of the size of the second display area 112 in the first direction D1 to the size of the display sub-pixel 110 in the first direction D1 may be 0.01-0.5 (for example, 0.2 or 0.3); for example, the second display
  • the ratio of the size of the region 112 in the first direction D1 to the size of the transparent region 172 in the first direction D1 may be 0.7-1 (for example, may be equal to 0.9 / 1.01) to better enhance the human eye viewing area. size of.
  • the size of the second display area 112 in the first direction D1 is the sum of the sizes of the second display area 112 provided on both sides of the first display area 111 in the first direction D1 (that is, w2l + w2r, see Figure 3).
  • the brightness of the second display area 112 is greater than the brightness of the first display area 111.
  • “brightness” refers to the intensity of light emission per unit area (for example, the intensity of light emitted from a display area per unit area).
  • the brightness of the second display area 112 may be 1.05 to 1.25 times (for example, 1.15 times or 1.1 times) the brightness of the first display area 111, so that the size of the human eye observation area can be increased as much as possible. It should be noted that, because the size of the display sub-pixel 110 is small, uneven brightness in the display sub-pixel 110 will not cause display defects (for example, moiré).
  • the user feels that the change in brightness is reduced during the movement of the eyes (for example, from the position VP1 to the position VP2), that is, ,
  • the images seen by the user during the movement are all normal 3D images; in this case, the display panel allows the user's eyes to see the wider black matrix unit 180 and move a greater distance (for example, in the first direction (D1 moves further away) without causing the user to notice obvious moiré. Therefore, the display panel 100 provided by at least one embodiment of the present disclosure improves the size of the human eye viewing area 210.
  • the size of the human eye observation area 210 is the width of the human eye observation area in the first direction D1.
  • the aperture ratio of the parallax barrier 170 is 18%.
  • the width of the sub-pixel 110 in the first direction D1 is 100, and the luminance per unit area of the display sub-pixel 110 is 1, the user's eyes can see the sub-pixels through the light-transmitting area 172 of the parallax barrier 170
  • the display panel 100 allows the user's eyes to see that the width of the black matrix unit 180 in the first direction D1 is y, and the second display
  • (36 + 0.1x) represents the brightness value when the black matrix unit 180 is not seen by the user's eyes
  • 1.1x + 36-xy represents the brightness value when the black matrix unit 180 is seen by the user's eyes.
  • 90% of the brightness value when the user's eyes do not see the black matrix unit 180 needs to be less than or equal to the brightness value when the user's eyes see the black matrix unit 180 .
  • the width x of the second display region 112 and the width y of the black matrix unit 180 that the display panel 100 allows the user to see also need to satisfy the following expression : 36-xy ⁇ 0. From the above expression, y ⁇ 36-x can be sequentially derived.
  • the width y of the black matrix unit 180 that the display panel 100 allows the user's eyes to see is 3.92.
  • the brightness of the second display area 112 is 1.1 times the brightness of the first display area 111, and the brightness between the brightness of the second display area 112 and the brightness of the first display area 111 is When the relationship changes, the above expressions will change accordingly, so I won't repeat them here.
  • the display panel 100 may further include an eye tracking device.
  • an eye tracking device At this time, by increasing the size of the human eye observation area, a longer position can be reserved for the eye tracking device to adjust the position of the human eye observation area. Time, thereby avoiding the use of an expensive eye tracking device with a short response time, and thus reducing the manufacturing cost of the display panel.
  • the width of the black matrix unit 180 in the first direction D1 may be set according to actual application requirements, which is not specifically limited in the embodiments of the present disclosure.
  • the width BM of the black matrix unit 180 in the first direction D1 may satisfy the following expression, that is, BM> K ⁇ 2 ⁇ W ⁇ 0.1 to avoid crosstalk.
  • K is the aperture ratio of the parallax barrier 170.
  • W is the width of the display sub-pixel 110 in the first direction D1.
  • the specific implementation method of the brightness of the second display region 112 being greater than the brightness of the first display region 111 can be set according to actual application requirements.
  • the embodiments of the present disclosure address this. No specific settings are made.
  • the display array layer provided by at least one embodiment of the present disclosure may be a liquid crystal display panel 100, and the liquid crystal display panel 100 may be implemented as a vertical electric field type liquid crystal display panel or a horizontal electric field type liquid crystal display panel.
  • the display sub-pixel 110 may be implemented as the display sub-pixel 110 shown in FIG. 4A, so that the liquid crystal display panel 100 is implemented as a horizontal electric field type liquid crystal display panel in a normally black mode.
  • the display sub-pixel 110 includes a pixel electrode 122 and a common electrode 121 located in the first display area 111 and a second display area 112, an insulating dielectric layer 195 located between the pixel electrode 122 and the common electrode 121, and The liquid crystal layer 123 on a side of the common electrode 121 remote from the pixel electrode 122.
  • a portion of the pixel electrode in the first display region 111 and a portion of the pixel electrode in the second display region 112 are in contact with each other and the pixel electrode 122 is formed by integration
  • a portion of the common electrode in the first display region 111 and Portions of the common electrode in the second display region 112 are in contact with each other and the common electrode 121 is formed by integration.
  • the pixel electrode 122 is connected to a common driving circuit 150 for driving the first display area 111 and the second display area 112 at the same time. Therefore, at any time, the first display area 111 and the second display area 112 receive the same driving signal.
  • a portion of the pixel electrode located in the first display region 111 and a portion of the pixel electrode in the second display region 112 receive the same driving voltage.
  • a portion of the pixel electrode 122 located in the first display region 111 and a portion of the pixel electrode 122 in the second display region 112 may also be connected to different driving circuits; for example, According to actual application requirements, for the examples shown in FIGS. 5A to 5C and FIGS. 6 to 7, different driving circuits may be used to drive the first display region 111 and the second display region 112.
  • At least one of the pixel electrode 122 and the common electrode 121 is a comb electrode (for example, the pixel electrode 122 is a comb electrode), and the comb electrode includes a plurality of first electrodes arranged in a first direction D1.
  • the sub-electrode 191 and a second sub-electrode 192 extending along the first direction D1 and for electrically connecting the plurality of first sub-electrodes 191.
  • the pitch P2 of the portion of the comb electrode in the second display area 112 is not equal to (for example, less than) the pitch P1 of the portion in the first display area 111, that is, the second display area
  • a pitch between two adjacent first sub-electrodes 191 in 112 is not equal to (for example, less than) a pitch between two adjacent first sub-electrodes 191 in the first display region 111.
  • the common driving circuit 150 applies a driving voltage to the pixel electrode 122
  • the liquid crystal driving electric field formed by the pixel electrode 122 and the common electrode 121 in the second display region 112 is not equal to (for example, greater than) in the first display region 111.
  • the formed liquid crystal drives an electric field. Therefore, the transmittance of a portion of the liquid crystal layer 123 in the second display region 112 is greater than the transmittance of a portion of the liquid crystal layer 123 in the first display region 111.
  • the brightness is greater than the brightness of the first display area 111.
  • the comb electrode is not limited to the structure including two second sub-electrodes 192 shown in FIG. 4B. According to the actual application requirements, the comb electrode may include only one second sub-electrode 192.
  • the pixel electrode 122 and the common electrode 121 may be provided In the same plane; at this time, the first sub-electrodes of the pixel electrode 122 and the first sub-electrodes of the common electrode 121 are alternately arranged in the first direction D1 and are electrically insulated from each other, and the second sub-electrode and the common of the pixel electrode 122 The second sub-electrode of the electrode 121 is oppositely disposed in the second direction D2.
  • the positional relationship between the pixel electrode 122 and the common electrode 121 with respect to the liquid crystal layer 123 is not limited to the positional relationship shown in FIG. 4A. According to actual application requirements, the pixel electrode 122 may be closer to the liquid crystal layer 123 than the common electrode 121.
  • the liquid crystal display panel 100 shown in FIG. 4A may also be implemented as a horizontal electric field type liquid crystal display panel in a normally white mode.
  • the pitch P2 of the comb electrodes in the second display area 112 may be made.
  • the pitch P1 in the first display area 111 is larger than the liquid crystal driving electric field formed by the pixel electrode 122 and the common electrode 121 in the second display area 112 when the common driving circuit 150 applies a driving voltage to the pixel electrode 122.
  • the liquid crystal driving electric field formed in the first display region 111 makes the transmittance of the portion of the liquid crystal layer 123 in the second display region 112 greater than the transmittance of the portion of the liquid crystal layer 123 in the first display region 111.
  • the brightness of the second display area 112 is made greater than the brightness of the first display area 111.
  • the present disclosure exemplifies the display panel provided by the embodiment of the present disclosure with the second display region positioned on both sides of the first display region in the first direction, but the embodiment of the present disclosure is not limited thereto.
  • the second display area can be set not only on both sides of the first display area in the first direction, but also on the two sides of the first display area in the second direction; in this case , The second display area is set around the first display area. Therefore, not only can the size of the human eye observation area be increased in the first direction, but also the size of the human eye observation area can be increased in the second direction, thereby increasing the user's freedom of use (for example, allowing the user to change the display screen's Placement direction).
  • the display sub-pixel 110 may also be implemented as the display sub-pixel 110 shown in FIG. 5A, so that the liquid crystal display panel 100 is implemented as a vertical electric field type liquid crystal display panel in a normally white mode.
  • the display sub-pixel 110 includes a pixel electrode 122 and a common electrode 121 located in the first display region 111 and the second display region 112, and a liquid crystal layer 123 located between the pixel electrode 122 and the common electrode 121.
  • a portion of the pixel electrode in the first display region 111 and a portion of the pixel electrode in the second display region 112 are in contact with each other and the pixel electrode 122 is formed by integration
  • a portion of the common electrode in the first display region 111 and Portions of the common electrode in the second display region 112 are in contact with each other and the common electrode 121 is formed by integration.
  • the pixel electrode 122 is connected to a common driving circuit 150 for driving the first display area 111 and the second display area 112 at the same time. Therefore, at any time, the first display area 111 and the second display area 112 receive the same driving signal.
  • a portion of the pixel electrode located in the first display region 111 and a portion of the pixel electrode in the second display region 112 receive the same driving voltage.
  • the display sub-pixel 110 further includes a dielectric material layer 124 disposed between the liquid crystal layer 123 and the pixel electrode 122.
  • the dielectric material layer 124 includes a first dielectric unit 127 located in the first display area 111 and a second dielectric unit 128 located in the second display area 112.
  • the first dielectric unit 127 and the second dielectric unit 128 can be made of, for example, silicon nitride, silicon oxide, and other suitable materials.
  • first display area 111 and the second display area 112 are not limited to only one kind of dielectric material, and each of the first display area 111 and the second display area 112 may be provided with at least two according to actual application requirements.
  • a dielectric material, the at least two dielectric materials may be arranged side by side in the first direction D1 or stacked in the third direction D3.
  • the equivalent dielectric constant between the pixel electrode and the common electrode in the second display region is smaller than the equivalent dielectric constant in the first display region.
  • the equivalent dielectric constant of the dielectric layer can be adjusted by adjusting the dielectric constant of the dielectric layer and / or its actual thickness.
  • the thickness of the first dielectric unit 127 is equal to the thickness of the second dielectric unit 128, and the dielectric of the first dielectric unit 127 is The dielectric constant is greater than the dielectric constant of the second dielectric unit 128, so that the capacitance C1 formed by the first dielectric unit 127 is larger than the capacitance C2 formed by the second dielectric unit 128; the capacitance Clq1 formed by the liquid crystal layer of the first display region 111 is equal to the first The capacitance Clq2 formed by the liquid crystal layers of the two display regions 111, therefore, Clq1 / C1 ⁇ Clq2 / C2.
  • the partial voltage of the capacitor formed by the liquid crystal layer of the first display region 111 is greater than the partial voltage of the capacitor formed by the liquid crystal layer of the second display region 112.
  • the common driving circuit 150 applies a driving voltage to the pixel electrode 122, the liquid crystal driving electric field formed by the pixel electrode 122 and the common electrode 121 in the second display region 112 is smaller than the liquid crystal driving electric field formed by the first display region 111.
  • the transmittance of a portion of the liquid crystal layer 123 in the second display region 112 is greater than the transmittance of a portion of the liquid crystal layer 123 in the first display region 111, and thus the brightness of the second display region 112 is greater than that of the first display region. 111 brightness.
  • the pixel electrode 122 and the common electrode 121 of the display sub-pixel 110 shown in FIG. 5A may be plate electrodes or comb electrodes. Comb electrodes are used in at least one of the pixel electrode 122 and the common electrode 121.
  • the pitch of the comb electrode in the second display region 112 may be equal to or not equal to (for example, greater than) the pitch in the first display region 111.
  • the dielectric material layer 124 is not limited to be disposed between the liquid crystal layer 123 and the pixel electrode 122. According to actual application requirements, the dielectric material layer 124 may also be disposed between the liquid crystal layer 123 and the common electrode 121 (see FIG. 5C). At this time, in the process of displaying one sub-pixel of the picture displayed by the sub-pixel 110, the brightness of the second display area 112 is greater than the brightness of the first display area 111. For specific reasons, refer to the example shown in FIG. 5A, which will not be repeated here. .
  • the display sub-pixel 110 may also be implemented as the display sub-pixel 110 shown in FIG. 5B.
  • the display sub-pixel 110 shown in FIG. 5B is similar to the display sub-pixel 110 shown in FIG. 5A. Therefore, only the differences will be described here, and the same points will not be repeated.
  • the thickness of the first dielectric unit 127 is not equal to (for example, less than) the thickness of the second dielectric unit 128, and the dielectric constant of the first dielectric unit 127 is equal to the dielectric constant of the second dielectric unit 128. This can simplify the manufacturing process.
  • the capacitance C1 formed by the first dielectric unit 127 is not equal to (for example, greater than) the capacitance C2 formed by the second dielectric unit 128, and the capacitance Clq1 formed by the liquid crystal layer of the first display region 111 is not equal (for example, The capacitance Clq2 formed by the liquid crystal layer of the second display region 111 is smaller than Clq1 / C1 ⁇ Clq2 / C2. According to the voltage dividing principle of the series capacitor, it can be known that the larger the capacitance is, the smaller the partial voltage is. Therefore, the partial voltage of the capacitor formed by the liquid crystal layer of the first display region 111 is greater than the partial voltage of the capacitor formed by the liquid crystal layer of the second display region 112.
  • the common driving circuit 150 applies a driving voltage to the pixel electrode 122
  • the liquid crystal driving electric field formed by the pixel electrode 122 and the common electrode 121 in the second display region 112 is smaller than the liquid crystal driving electric field formed by the first display region 111. Therefore, the transmittance of the liquid crystal layer 123 located in the second display region 112 is greater than the transmittance of the liquid crystal layer 123 located in the first display region 111, and thus the brightness of the second display region 112 is greater than the brightness of the first display region 111.
  • the dielectric constant of the first dielectric unit 127 may not be equal to the dielectric constant of the second dielectric unit 128, as long as it needs to satisfy Clq1 / C1 ⁇ Clq2 / C2 is sufficient, that is, ⁇ d1 (H / h1-1)> ⁇ d2 (H / h2-1) is satisfied.
  • ⁇ d1 H / h1-1) is an equivalent dielectric constant of the first dielectric unit 127
  • ⁇ d2 H / h2-1) is the equivalent dielectric constant of the second dielectric unit 128
  • ⁇ d1 is the dielectric constant of the first dielectric unit 127
  • ⁇ d2 is the dielectric constant of the second dielectric unit 128,
  • h1 is the first dielectric
  • the thickness of the unit 127, h2 is the thickness of the second dielectric unit 128, and H is the distance between the pixel electrode 122 and the common electrode 121.
  • the thickness h1 of the first dielectric unit 127 and the thickness h2 of the second dielectric unit 128 can be set according to actual application requirements, which is not specifically limited in the embodiments of the present disclosure.
  • the thickness h1 of the first medium unit 127 may be equal to zero, that is, the first medium unit 127 is not provided in the first display area 111.
  • the display sub-pixel 110 shown in FIGS. 4A and 5A-5C further includes a first substrate 115 and a second substrate 126.
  • the first substrate 115 and the second substrate 126 may be glass substrates. , Quartz substrate, plastic substrate (such as polyethylene terephthalate (PET) substrate), or a substrate made of other suitable materials.
  • PET polyethylene terephthalate
  • the first substrate 115 and the second substrate 126 may be disposed on both sides of the display pixel.
  • the first substrate 115 is disposed on a side of the common electrode 121 away from the pixel electrode 122, for example.
  • the two substrates 126 are disposed on a side of the pixel electrode 122 remote from the common electrode 121, for example.
  • both the pixel electrode 122 located in the first display area 111 and the pixel electrode 122 located in the second display area 112 are used to simultaneously drive the first display area 111.
  • the common driving circuit 150 connected to the second display area 112 is connected, the brightness of the second display area 112 is greater than the brightness of the first display area 111 during the process of displaying a sub-pixel of the display screen of the sub-pixel 110.
  • the size of the observation area of the human eye can be increased without increasing the complexity of the driving circuit of the display panel 100.
  • the display array layer provided by the embodiments of the present disclosure may also be implemented as an organic light emitting diode (OLED) display panel.
  • the display sub-pixel 110 may be implemented as the display sub-pixel 110 shown in FIG. 6.
  • the display sub-pixel 110 includes an OLED located in the first display area 111 and a second display area 112, and a portion of the OLED located in the first display area 111 and a portion of the OLED in the second display area 112 are electrically connected to each other. Is connected and configured to receive the same drive voltage.
  • the OLED may be connected to a common driving circuit 150 for driving the first display area 111 and the second display area 112 at the same time.
  • the OLED includes an anode 132, a resistance layer 135, a light emitting layer 133, and a cathode 134 which are sequentially disposed; for example, a portion of the anode located in the first display area 111 and a portion of the anode of the second display area 112 are connected to each other and are formed by integration
  • the resistive layer 135 includes a first resistive unit 136 and a second resistive unit 137.
  • the resistivity of the second resistive unit 137 is smaller than that of the first resistive unit 136.
  • the resistivity of a portion of the OLED in the second display region 112 is It is smaller than the resistivity of the OLED in the portion of the first display area 111.
  • the current passing through a conductor is proportional to the voltage applied to the two ends of the conductor, and is inversely proportional to the resistance of the conductor. Therefore, when the same driving voltage is applied to the OLEDs located in the first display area 111 and the second display area 112 (the same driving voltage is applied using the common driving circuit 150), the OLEDs in the second display area 112 are The partially formed driving current density is greater than the driving current density formed by the OLED in a portion of the first display region 111, and thus the brightness of the second display region 112 is greater than that of the first display region 111.
  • the first resistance unit 136 and the second resistance unit 137 may be made of different metals.
  • the resistivity of the metal forming the second resistance unit 137 is smaller than that of the metal forming the first resistance unit 136.
  • the display sub-pixel 110 shown in FIG. 6 may further include a functional layer including one or more of a hole transport layer, an electron transport layer, a hole injection layer, and an electron injection layer.
  • the display sub-pixel 110 may not need to be provided with the resistance layer 135, but may make the resistivity of a portion of the functional layer in the second display region 112 smaller than that of the functional layer in the first portion.
  • the resistivity of a part in a display area 111 makes the resistivity of a part of the OLED in the second display area 112 smaller than that of the part of the OLED in the first display area 111, thereby simplifying the manufacturing process and reducing the display panel.
  • the material of the part of the electron injecting layer in the first display region 111 may be made different from the material of the part of the electron injecting layer in the second display region 112, thereby making the part of the OLED in the second display region 112
  • the resistivity of is not equal to (for example, less than) the resistivity of a portion of the OLED in the first display region 111.
  • the anode 132 may be made of a metal, an alloy, or a combination of a metal, an alloy, and an oxide having a good conductive function.
  • the anode 132 may be made of, for example, at least one of the following materials: Ag, Au, Pd, Pt, Ag: Au (ie, an alloy of Ag and Au), Ag: Pd, Ag: Pt, Al: Au, Al: Pd, Al: Pt, Ag: Au, Ag / Pd (that is, a stack of Ag and Pd), Ag / Pt, Ag / ITO, Ag / IZO, Al / Au, Al / Pd, Al / Pt, Al / ITO , Al / IZO, Ag: Pd / ITO, Ag: Pt / ITO, Al: Au / ITO, Al: Pd / ITO, Al: Pt / ITO, Ag: Au / ITO, Ag: Pd / IZO, Ag: Pt / IZ
  • the cathode 134 may be made of a material having a low work function
  • the cathode 1342 may be made of at least one of the following materials: (Mg), calcium (Ca), indium (In), lithium (Li) , Aluminum (Al), silver (Ag), or alloys or fluorides thereof, such as magnesium (Mg) -silver (Ag) alloys, lithium (Li) -fluorine compounds, lithium (Li) -oxygen (O) compounds, and the like.
  • the display sub-pixel 110 further includes a first substrate 115 and a second substrate 126.
  • the first substrate 115 and the second substrate 126 may be a glass substrate, a quartz substrate, or a plastic substrate (such as Polyethylene terephthalate (PET) substrate) or a substrate made of other suitable materials.
  • PET Polyethylene terephthalate
  • both the OLED portion located in the first display area 111 and the OLED portion located in the second display area 112 are used to drive the first display area 111 and the second display area 112 simultaneously.
  • the brightness of the second display area 112 is greater than the brightness of the first display area 111 during the process of displaying one sub-pixel of the picture of the sub-pixel 110, so that the display panel can be increased without
  • the complexity of the driving circuit of 100 increases the size of the observation area of the human eye.
  • the display sub-pixel 110 may also be implemented as the display sub-pixel 110 of FIG. 7.
  • the display sub-pixel 110 further includes a light dispersion structure 141 disposed in the first display area 111.
  • the light dispersion structure 141 is a scattering structure, and includes a uneven structure, a prism structure, and the like.
  • the light dispersion structure 141 is configured to diffuse the light emitted from the first display area 111 into the second display area 112, so that during the process of displaying one sub-pixel of the picture displayed by the sub-pixel 110, the The brightness is greater than the brightness of the first display area 111.
  • the display sub-pixel 110 further includes a common driving circuit 150 for driving the first display area 111 and the second display area 112 at the same time, and a portion of the display sub-pixel 110 located in the first display area 111 and a portion of the display sub-pixel 110 located in the second display area 112 A part of is electrically connected and all are connected to the common driving circuit 150.
  • the display sub-pixel 110 of FIG. 7 can increase the size of the viewing area of the human eye without increasing the complexity of the driving circuit of the display panel 100.
  • the first display area 111 displaying the sub-images shown in FIGS. 4A, 5A-5C, and 6 may also be provided with a light dispersing structure 141, thereby further improving the second display area.
  • the ratio of the brightness of 112 to the brightness of the first display area 111, and therefore the size of the viewing area of the human eye can be further increased without increasing the complexity of the driving circuit of the display panel 100.
  • the display sub-pixel 110 may also be implemented as the display sub-pixel 110 of FIG. 8A.
  • the display sub-pixel 110 includes a first display area 111 and a second display area 111, respectively. At least part of the first driving circuit 161 and the second driving circuit 162 of the display area 112 are independent.
  • the first driving circuit 161 and the second driving circuit 162 may provide different first and second display areas 111 and 112 during display.
  • Driving signal data signal
  • the first driving circuit 161 and the second driving circuit 162 for respectively driving the first display region 111 and the second display region 112 may be completely independent of each other, and the two are connected to different gate lines and data lines, so that these different gates Line and data lines control and apply drive signals.
  • first driving circuit 161 and the second driving circuit 162 may share some circuits, but they have at least different output terminals, for example, to be connected to different pixel electrodes, so that the first display area 111 and the second display area can be driven separately. 112.
  • the display sub-pixel 110 includes different and insulated first pixel electrodes 163 located in the first display area 111 and the second display area 112 from each other. And the second pixel electrode 164; and the first pixel electrode 163 and the second pixel electrode 164 are electrically connected to the first driving circuit 161 and the second driving circuit 164, respectively.
  • the first driving circuit 161 includes a first switching transistor
  • the second driving circuit 164 includes a second switching transistor. The first switching transistor and the second switching transistor are connected to the same gate line but connected to different data lines.
  • the same gate can be shared, but with different sources and drains, so that the first display region 111 and the second display region 112 can be driven at the same time; or the first switching transistor and the second switching transistor are connected to the same data line but Connected to different gate lines, so they can share the same source (or drain) connected to a data line (for example, the same data line), but with different gates and different drains (or sources) Therefore, the two can be time-controlled to drive the first display area 111 and the second display area 112 respectively.
  • the display sub-pixel 110 includes different and insulated first anodes and second anodes located in the first display area 111 and the second display area 112; and An anode and a second anode are electrically connected to the first driving circuit 161 and the second driving circuit 164, respectively.
  • the first display area 111 and the second display area 112 may have a common cathode (for example, a cathode located in the first display area 111).
  • the cathodes located in the second display region 112 are electrically connected to each other and formed integrally).
  • the display sub-pixel 110 includes different and insulated first cathodes and third electrodes located in the first display area 111 and the second display area 112. Two cathodes; and the first and second cathodes are electrically connected to the first driving circuit 161 and the second driving circuit 164, respectively, at this time, the first display area 111 and the second display area 112 may have a common anode (for example, located at the first The anode of the display region 111 and the anode of the second display region 112 are electrically connected to each other and are integrally formed).
  • the first switching transistor included in the first driving circuit 161 and the second switching transistor included in the second driving circuit 164 may share part of the electrodes to drive the first display area 111 and the first display area simultaneously or in time.
  • the first driving circuit 161 further includes components such as a first driving transistor and a first light-emitting control transistor
  • the second driving circuit 164 includes components such as a second driving transistor and a second light-emitting control transistor.
  • the first display area 111 and the second display area 112 may include a plurality of independently driven sub-subpixels 193, respectively.
  • the brightness of the second display area 112 can be greater than the brightness of the first display area 111.
  • the sub-pixel 193 may include a micro LED or a micro OLED.
  • the size of the sub-sub-image can be set according to actual needs and process levels, and the size of the sub-sub-image can be, for example, 5 ⁇ m to 50 ⁇ m.
  • FIG. 9 is a schematic diagram of a display device 10 provided by at least one embodiment of the present disclosure.
  • the display device 10 includes a display panel 100 according to any embodiment of the present disclosure.
  • the display device 10 may be implemented as any product or component having a 3D display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display panel 100 and the display device 10 for example, a thin film transistor, a control device, an image data encoding / decoding device, a row scan driver, a column scan driver, a clock circuit, etc.
  • the display device 10 can increase the size of the viewing area of the human eye.
  • At least one embodiment of the present disclosure further provides a driving method of driving a display panel, including: applying a first display data voltage to a first display area of a display sub-pixel of the display panel; and a first display data voltage of the display sub-pixel of the display panel.
  • a second display data voltage is applied to the two display areas.
  • the brightness of the second display area is greater than that of the first display area; the first display area is located in the middle portion of the display sub-pixel, and the second display area is located on the first display in the first direction Area on both sides.
  • the first display data voltage is different from the second display data voltage; in this case, the display sub-pixels include at least partially independent first driving circuits for driving the first display area and the second display area, and A second driving circuit; a first display data voltage is applied in the first display region through the first driving circuit, and a second display data voltage is applied in the second display region through the second driving circuit.
  • the first display data voltage and the second display data voltage are the same as each other; in this case, the display sub-pixel includes a common driving circuit for driving the first display area and the second display area at the same time; the common The driving circuit applies a first display data voltage in the first display area and a second display data voltage in the second display area.
  • the driving method may include the following steps:
  • Step S10 Apply the first display data voltage to the first display area through the first driving circuit.
  • Step S20 Apply a second display data voltage to the second display area through the second driving circuit.
  • the first display data voltage is different from the second display data voltage.
  • the application of the first display data voltage to the first display area not equal to (for example, greater than) applying the second display data voltage to the second display area, it is possible to make the second display data
  • the brightness of the display area is greater than the brightness of the first display area, so that the driving method can increase the size of the human eye viewing area of the display panel and the display device including the display panel.

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Abstract

一种显示面板（100）及其驱动方法、显示装置（10）。显示面板（100）包括显示子像素（110），显示子像素（110）包括在第一方向（D1）上位于中间部分的第一显示区域（111）和位于周边部分的第二显示区域（112）；在显示子像素（110）显示画面的一个子像素的过程中，第二显示区域（112）的亮度大于第一显示区域（111）的亮度。显示面板（100）及其驱动方法、显示装置（10）可提升人眼可视区域。

Description

显示面板及其驱动方法、显示装置
对相关申请的交叉参考
本申请要求于2018年7月20日递交的中国专利申请第201810804500.9号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及一种显示面板及其驱动方法、显示装置。
背景技术
近年来，三维(3D)显示已经成为显示领域的一大发展趋势。一种3D显示装置的原理是：使人的左眼和右眼分别接收具有视差的左眼图像和右眼图像，然后大脑对左眼图像和右眼图像进行叠加并形成立体视觉。3D显示装置主要包括辅助3D显示装置和裸眼式3D显示装置。尽管目前主流的3D显示装置通常为辅助3D显示装置，但是，辅助3D显示装置需要用户佩戴眼镜(例如，色差式眼镜、偏光式眼镜或快门式眼镜)或者头盔才能够将左眼图像和右眼图像分别送入用户的左眼和右眼中。眼镜或头盔带来的不适感阻止了辅助3D显示装置的进一步发展，并促使了业界转为研发裸眼3D显示装置。
发明内容
本公开的至少一个实施例提供了一种显示面板，其包括显示子像素。所述显示子像素包括位于中间部分的第一显示区域和在第一方向上位于所述第一显示区域两侧的第二显示区域；以及在显示画面的一个子像素的过程中，所述第二显示区域的亮度大于所述第一显示区域的亮度。
例如，在所述显示面板的至少一个示例中，所述显示面板为液晶显示面板，所述显示子像素包括位于所述第一显示区域和所述第二显示区域中的像素电极和公共电极，位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分彼此电性连接，且位于所述第一显示区域的 公共电极的部分和位于所述第二显示区域中的公共电极的部分彼此电性连接；以及当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场不等于在所述第一显示区域形成的液晶驱动电场。
例如，在所述显示面板的至少一个示例中，当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场小于在所述第一显示区域形成的液晶驱动电场。
例如，在所述显示面板的至少一个示例中，所述显示子像素包括液晶层以及介电材料层，所述介电材料层设置在所述液晶层以及所述像素电极或公共电极之间，且包括位于所述第一显示区域的第一介质单元以及位于所述第二显示区域的第二介质单元；以及所述第二介质单元的等效介电常数小于所述第一介质单元的等效介电常数。
例如，在所述显示面板的至少一个示例中，所述第二介质单元的厚度等于所述第一介质单元的厚度，且所述第二介质单元的介电常数小于所述第一介质单元的介电常数。
例如，在所述显示面板的至少一个示例中，当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场大于在所述第一显示区域形成的液晶驱动电场。
例如，在所述显示面板的至少一个示例中，所述像素电极和所述公共电极至少之一为梳状电极，且所述梳状电极在所述第二显示区域中的部分的节距小于所述梳状电极在所述第一显示区域中的部分的节距。
例如，在所述显示面板的至少一个示例中，所述显示面板为有机发光二极管显示面板，所述显示子像素包括位于所述第一显示区域和所述第二显示区域中的有机发光二极管，位于所述第一显示区域的有机发光二极管的部分和位于所述第二显示区域中的有机发光二极管的部分彼此电性连接且配置为接收相同的驱动电压；当向位于所述第一显示区域的有机发光二极管的部分和位于所述第二显示区域中的有机发光二极管的部分施加所述相同的驱动电 压时，所述有机发光二极管在所述第二显示区域形成的驱动电流的密度大于在所述第一显示区域形成的驱动电流的密度。
例如，在所述显示面板的至少一个示例中，所述有机发光二极管在所述第二显示区域中的部分的电阻率小于在所述第一显示区域中的部分的电阻率。
例如，在所述显示面板的至少一个示例中，所述显示子像素还包括设置在所述第一显示区域中的出光侧的光分散结构，所述光分散结构配置为将从所述第一显示区域中出射的光线扩散至所述第二显示区域中。
例如，在所述显示面板的至少一个示例中，所述显示子像素包括用于同时驱动所述第一显示区域和所述第二显示区域的共同的驱动电路。
例如，在所述显示面板的至少一个示例中，所述显示子像素包括用于分别驱动所述第一显示区域和所述第二显示区域的至少部分独立的第一驱动电路和第二驱动电路。
例如，在所述显示面板的至少一个示例中，所述显示子像素包括位于所述第一显示区域的第一像素电极以及位于所述第二显示区域的第二像素电极；所述第一像素电极和所述第二像素电极彼此绝缘；以及所述第一像素电极和所述第二像素电极分别与所述第一驱动电路和所述第二驱动电路电连接。
例如，在所述显示面板的至少一个示例中，所述第二显示区域的亮度为所述第一显示区域的亮度1.05-1.25倍。
例如，在所述显示面板的至少一个示例中，所述第二显示区域在所述第一方向上的尺寸小于所述显示子像素在所述第一方向上的尺寸；以及所述第二显示区域在所述第一方向上的尺寸与所述显示子像素在所述第一方向上的尺寸的比值为0.01-0.5。
例如，在所述显示面板的至少一个示例中，所述第二显示区域在所述第一方向上的尺寸小于等于所述透光区在所述第一方向上的尺寸；以及所述第二显示区域在所述第一方向上的尺寸与所述透光区在所述第一方向上的尺寸的比值为0.7-1。
例如，在所述显示面板的至少一个示例中，所述显示面板包括视差屏障和多个所述显示子像素；所述视差屏障设置在所述显示子像素的出光侧且包 括在所述第一方向上交替排布的遮光区和透光区；以及多个所述显示子像素在所述第一方向上并列布置。
本公开的至少一个实施例还提供了一种显示装置，其包括本公开至少一个实施例提供的显示面板。
本公开的至少一个实施例又提供了一种驱动显示面板的驱动方法，其包括：向所述显示面板的显示子像素的第一显示区域施加第一显示数据电压；以及向所述显示面板的显示子像素的第二显示区域施加第二显示数据电压。在显示画面的一个子像素的过程中，所述第二显示区域的亮度大于所述第一显示区域的亮度；所述第一显示区域位于所述显示子像素的中间部分，所述第二显示区域在第一方向上位于所述第一显示区域两侧。
例如，在所述显示面板的驱动方法的至少一个示例中，所述第一显示数据电压与所述第二显示数据电压不同；所述显示子像素包括用于分别驱动所述第一显示区域和所述第二显示区域的至少部分独立的第一驱动电路和第二驱动电路；所述第一显示数据电压通过所述第一驱动电路施加在所述第一显示区域中，以及所述第二显示数据电压通过所述第二驱动电路施加所述第二显示区域中。
例如，在所述显示面板的驱动方法的至少一个示例中，所述第一显示数据电压与所述第二显示数据电压相同。
例如，在所述显示面板的驱动方法的至少一个示例中，所述显示面板包括视差屏障和多个所述显示子像素；所述视差屏障设置在所述显示子像素的出光侧且包括在所述第一方向上交替排布的遮光区和透光区；以及多个所述显示子像素在所述第一方向上并列布置。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1A是一种显示面板的截面示意图；
图1B是用于示出用户在位于不同位置的情况下观察到黑矩阵单元的宽度不同的示意图；
图2A是本公开的至少一个实施例提供的一种显示面板的平面示意图；
图2B是本公开的至少一个实施例提供的一种显示面板的截面示意图；
图2C是示出用户在不同位置的情况下观察到黑矩阵单元的宽度不同的示意图；
图3是本公开的至少一个实施例提供的一种显示子像素的平面示意图；
图4A是本公开的至少一个实施例提供的一种显示子像素的示意图；
图4B是本公开的至少一个实施例提供的一种梳状电极；
图4C是本公开的至少一个实施例提供的一种像素电极和公共电极的组合结构；
图5A是本公开的至少一个实施例提供的另一种显示子像素的示意图；
图5B是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图5C是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图6是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图7是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图8A是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图8B是本公开的至少一个实施例提供的再一种显示子像素的示意图；
图9是本公开的至少一个实施例提供的显示装置的示例性框图；以及
图10是本公开的至少一个实施例提供的显示面板的驱动方法的示例性流程图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同 的组成部分。同样，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
图1A示出了一种显示面板的截面示意图。如图1A所示，该显示面板包括显示阵列层以及设置在显示阵列层的出光侧的视差屏障570，显示阵列层和视差屏障570例如在第三方向D3上叠置。显示阵列层包括在第一方向D1交替排布的第一显示像素511和第二显示像素512以及设置在第一显示像素511和第二显示像素512之间的黑矩阵单元580。例如，多个第一显示像素511可分别用于显示第一图像对应的多个第一图像像素，多个第一图像像素组合后可得到第一图像；多个第二显示像素512可分别用于显示第二图像对应的多个第二图像像素多个第二图像像素组合后可得到第二图像，第一图像和第二图像之间具有视差，可用于实现立体显示。视差屏障570包括在第一方向上交替排布的遮光区571和透光区572。第一显示像素511和第二显示像素512分别与遮光区571在显示阵列层的正投影部分重叠并从透光区572露出。在视差屏障570的遮挡下，第一显示像素511发射的光线被用户的左眼接收，第二显示像素512发射的光线被用户的右眼接收，在用户的大脑对左眼接收的图像和右眼接收的图像叠加之后，用户可以感受到三维(3D)图像，由此图1A示出的显示面板具有3D显示功能。
本公开的发明人在研究中注意到，图1A示出的3D显示面板的人眼观察区域(eyebox)550较小，并因此导致在用户的眼睛位于人眼观察区域550之外的情况下，可能会出现摩尔纹和图像串扰(用户的左眼看到对应于右眼的图像)问题。在摩尔纹和图像串扰过于严重的情况下，人眼将观察不到3D图像，此时，用户的眼睛所处的区域被称为死区。为了观看到理想的3D图像，用户的眼睛需要时刻保持在人眼观察区域550中，由此降低了用户体验。尽管可以通过采用眼球追踪装置来调整3D显示面板的人眼观察区域550的位置，但是眼球追踪装置的响应时间使得眼球追踪装置难以实时基于用户的位置来调整人眼观察区域550的位置；在人眼观察区域550过小的情况下， 人眼可能在眼球追踪装置调整人眼观察区域550的位置之前就离开了人眼观察区域550，并因此导致人眼观察到存在严重摩尔纹或图像串扰的3D图像，甚至观察不到任何3D图像。下面结合图1B，并以摩尔纹问题为例，对3D显示面板的人眼观察区域550做示例性说明。
如图1B所示，用户的眼睛位于位置VP2情况下的观察角度不等于用户的眼睛位于位置VP1情况下的观察角度，在人眼位于位置VP1的情况下，人眼观察到部分黑矩阵单元580和部分第二显示像素512；而在人眼位于位置VP2的情况下，人眼仅观察到第二显示像素512，而并未观察到黑矩阵单元580。由于显示阵列层的对应于黑矩阵单元580的区域无光线出射，即便所看到像素显示相同的内容，人眼在位置VP2接收到的光线强度大于人眼在位置VP1接收到的光线强度。因此，人眼在由位置VP1移动到位置VP2的过程中将感受到亮度的变化，并有可能观察到存在摩尔纹的图像。当人眼感受到的亮度的变化大于例如10％的情况下，图像的摩尔纹将过于明显并显著降低图像质量，这意味着用户的眼睛已经位于人眼观察区域之外。例如，可以基于允许的人眼感受到的亮度的变化的最大值确定人眼观察区域。为了提升用户体验，需要增加人眼观察区域。
本公开的实施例提供了一种显示面板及其驱动方法、显示装置。该显示面板包括显示子像素和视差屏障。视差屏障设置在显示子像素的出光侧且包括在第一方向上交替排布的遮光区和透光区。显示子像素包括位于中间部分的第一显示区域以及位于周边部分的第二显示区域；在显示子像素显示画面的一个子像素的过程中，第二显示区域的亮度大于第一显示区域的亮度。通过设置位于中间部分的第一显示区域以及位于周边部分(例如，在第一方向上位于第一显示区域两侧)的第二显示区域，并使得第二显示区域的亮度大于第一显示区域的亮度，可以增加人眼允许看到的黑矩阵单元的宽度，由此可以提升人眼观察区域的尺寸。
下面通过几个示例对根据本公开实施例提供的显示面板进行非限制性的说明，如下面所描述的，在不相互抵触的情况下这些具体示例中不同特征可以相互组合，从而得到新的示例，这些新的示例也都属于本公开保护的范围。
例如，图2A和图2B分别示出了本公开的至少一个实施例提供的显示面板100的平面示意图和截面示意图。如图2A和图2B所示，该显示面板100 包括显示子像素110以及设置在显示子像素110的出光侧的视差屏障170(图2A中未示出视差屏障)；显示子像素110例如在第一方向D1和第二方向D2上重复排布，并由此形成了显示阵列层；视差屏障170包括在第一方向D1上交替排布的遮光区171和透光区172。第一方向D1例如为水平方向，即横向，第二方向D2例如为垂直于第一方向D1的竖直方向。
需要说明的是，遮光区171和透光区172在第一方向D1上的尺寸以及视差屏障170与显示子像素110在第三方向D3上的间距可以与相关设计相同，由此可以使得显示面板100的工作距离(例如，显示面板100的观看位置与显示面板100的出光面之间的距离)等参数与相关的显示面板(例如，图1A所示的显示面板)相同。第三方向D3例如为垂直于第一方向D1和第二方向D2的方向。
如图2A和图2B所示，显示子像素110包括在第一方向D1上位于中间部分的第一显示区域111，位于周边部分的第二显示区域112以及设置在第二显示区域112的远离第一显示区域111一侧的黑矩阵单元180。第二显示区域112可以在第一方向D1上设置在第一显示区域111的两侧，例如相对于该显示子像素110在第一方向D1上的中轴线对称设置，该在第一方向D1上的中轴线例如沿第二方向D2延伸。例如，每个显示子像素110(每个显示子像素110的第一显示区域111和第二显示区域112)用于显示显示画面的一个子像素。在同一个显示子像素中，第一显示区域111和第二显示区域112出射的光线的颜色相同，并且第一显示区域111和第二显示区域112出射的光线的偏振态相同。需要说明的是，在第一方向D1上相邻的三个显示子像素110可以分别出射红色光线、绿色光线和蓝色光线，组合得到一个像素，但本公开的实施例不限于此。相对于图2A和图2B，在另一个示例中，第二显示区域112除了在第一方向D1上设置在第一显示区域111的两侧之外，第二显示区域112还可以进一步在第二方向D2上设置在第一显示区域111的两侧，例如第二显示区域112还可以相对于该显示子像素110在第二方向D2上的中轴线对称设置(该在第二方向D2上的中轴线例如沿第一方向D1延伸)，则在该示例中，第一显示区域111由第二显示区域112包围。
如图3所示，第一显示区域111在第一方向D1上的尺寸w1以及第二显示区域112在第一方向D1上的尺寸w2l+w2r可以根据实际应用需求进行设 定，本公开的实施例对此不做具体限定。例如，第二显示区域112在第一方向D1上的尺寸小于显示子像素110在第一方向D1上的尺寸；第二显示区域112在第一方向D1上的尺寸小于透光区172在第一方向D1上的尺寸。例如，第二显示区域112在第一方向D1上的尺寸与显示子像素110在第一方向D1上的尺寸的比值范围可以为0.01-0.5(例如，0.2或0.3)；又例如，第二显示区域112在第一方向D1上的尺寸与透光区172在第一方向D1上的尺寸的比值范围可以为0.7-1(例如，可以等于0.9/1.01)，以更好地提升人眼观察区域的尺寸。需要说明的是，第二显示区域112在第一方向D1上的尺寸为设置在第一显示区域111的两侧的第二显示区域112在第一方向D1上的尺寸之和(也即，w2l+w2r，参见图3)。
在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度。在本公开的一些示例中，“亮度”指代单位面积的发光强度(例如，单位面积的显示区域的发射的光线的强度)。例如，第二显示区域112的亮度可以为第一显示区域111的亮度1.05-1.25倍(例如，1.15倍或1.1倍)，由此可以尽可能地提升人眼观察区域的尺寸。需要说明的是，由于显示子像素110的尺寸较小，因此显示子像素110内亮度不均匀不会造成显示不良(例如，摩尔纹)。
如图2C所示，在用户的眼睛位于位置VP2的情况下，尽管用户看到了黑矩阵单元180，但是由于用户看到的第二显示区域112的亮度大于第一显示区域111的亮度，由此可以提升人眼接收到的光线的强度(例如，相比于第二显示区域112的亮度等于第一显示区域111的亮度的示例)。因此，相比于图1B示出的显示装置10，对于图2C示出的显示面板100，用户在眼睛移动过程中(例如，由位置VP1移动到位置VP2)感受到亮度的变化降低，也即，用户在移动过程中看到的图像均为正常的3D图像；此种情况下，显示面板允许用户的眼睛看到更宽的黑矩阵单元180以及移动更远的距离(例如，在第一方向D1上移动更远的距离)而不会使用户感受到明显的摩尔纹，由此，本公开的至少一个实施例提供的显示面板100的提升了人眼观察区域210的尺寸；该示例中，人眼观察区域210的尺寸为人眼观察区域在第一方向D1上的宽度。
为了具体说明本公开的实施例提供的显示面板100对人眼观察区域的尺 寸提升的效果，下面结合一个示例做示例性说明。例如，在显示面板100为两视图显示(也即，多个显示子像素110在第一方向D1上交替显示左眼图像的子像素和右眼图像的子像素)，视差屏障170的开口率(也即，视差屏障170的透光区172在第一方向D1上的宽度与视差屏障170的透光区172和遮光区171在第一方向D1上的宽度之和的比值)为18％，显示子像素110在第一方向D1上的宽度为100，并且显示子像素110的单位面积的发光亮度为1的情况下，用户的眼睛透过视差屏障170的透光区172可以看到的子像素大小为100×18％×2＝36，这是由于视差屏障170的一个周期(也即，一个透光区172和遮光区171)对应于两个显示子像素110。假设第二显示区域112在第一方向D1上的宽度为x(x<36)，显示面板100允许用户的眼睛看到黑矩阵单元180在第一方向D1上的宽度为y，以及第二显示区域112的亮度为第一显示区域111的亮度的1.1倍，则显示面板100允许用户的眼睛观看到的最大亮度为(36-x)×1+x×(1+10％)＝36+0.1x，并且第二显示区域112的宽度x以及显示面板100允许用户的眼睛看到的黑矩阵单元180的宽度y需要满足以下的表达式，以使得：(36+0.1x)×0.9≤1.1x+36-x-y。
在上述表达式中，(36+0.1x)表示在用户的眼睛没有看到黑矩阵单元180时的亮度值，1.1x+36-x-y表示在用户的眼睛看到黑矩阵单元180时的亮度值。在用户的眼睛对摩尔纹容忍条件为亮度的10％情况下，用户的眼睛没有看到黑矩阵单元180时的亮度值的90％需要小于等于用户的眼睛看到黑矩阵单元180时的亮度值。
由上述表达式可以顺次推出下述的两个表达式：36×0.9+0.09x≤36+0.1x-y和y≤3.6+0.01x。
此外，为了保证获取的黑矩阵单元180的宽度y具有物理意义，第二显示区域112的宽度x以及显示面板100允许用户的眼睛看到的黑矩阵单元180的宽度y还需要满足以下的表达式：36-x-y≥0。由上述表达式可以顺次推出y≤36-x。
例如，在第二显示区域112在第一方向D1上的宽度为x＝32的情况下，显示面板100允许用户的眼睛看到的黑矩阵单元180的宽度y＝3.92。然而，对于图1B示出的显示装置10，显示面板100允许用户的眼睛看到的黑矩阵单元180的宽度y为36×0.1＝3.6。因此，本公开的至少一个实施例提供的显 示面板100允许用户看到更宽的黑矩阵单元180，由此使得用户的眼睛可以在更宽的范围内移动，也即，本公开的实施例提供的显示面板100提升了人眼观察区域210的尺寸。
需要说明的是，在上述示例中，假设了第二显示区域112的亮度为第一显示区域111的亮度的1.1倍，在第二显示区域112的亮度与第一显示区域111的亮度之间的关系改变的情况下，上述表达式会发生相应变化，在此不再赘述。
例如，根据实际应用需求，一个示例中，显示面板100还可以包括眼球追踪装置，此时，通过提升了人眼观察区域的尺寸可以为眼球追踪装置调节人眼观察区域的位置预留更长的时间，由此可以避免使用响应时间短但价格昂贵的眼球追踪装置，并因此可以降低显示面板的制作成本。
需要说明的是，黑矩阵单元180在第一方向D1上的宽度可以根据实际应用需求进行设定，本公开的实施例对此不做具体限定。黑矩阵单元180在第一方向D1上的宽度BM例如可以满足以下表达式，也即，BM＞K×2×W×0.1，以避免串色，此处，K为视差屏障170的开口率，W为显示子像素110在第一方向D1上的宽度。
在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度的具体实现方法可以根据实际应用需求进行设定，本公开的实施例对此不做具体设定。
例如，本公开的至少一个实施例提供的显示阵列层可以为液晶显示面板100，液晶显示面板100可以实现为垂直电场型液晶显示面板或者水平电场型液晶显示面板。
例如，显示子像素110可以实现为图4A示出的显示子像素110，以使得液晶显示面板100实现为常黑模式的水平电场型液晶显示面板。如图4A所示，显示子像素110包括位于第一显示区域111和第二显示区域112中的像素电极122和公共电极121、位于像素电极122和公共电极121之间的绝缘介质层195以及位于公共电极121的远离像素电极122的一侧的液晶层123。例如，位于第一显示区域111的像素电极的部分和第二显示区域112中的像素电极的部分彼此相接且通过一体化形成像素电极122，以及位于第一显示区域111的公共电极的部分和第二显示区域112中的公共电极的部分彼此相 接且通过一体化形成公共电极121。像素电极122与用于同时驱动第一显示区域111和第二显示区域112的共同的驱动电路150连接，由此，在任一时刻，第一显示区域111和第二显示区域112接收相同的驱动信号；例如，位于第一显示区域111的像素电极的部分和第二显示区域112中的像素电极的部分接收相同的驱动电压。
需要说明的是，在图4A示出的示例中，位于第一显示区域111的像素电极122的部分和第二显示区域112中的像素电极122的部分还可以与不同的驱动电路连接；例如，根据实际应用需求，对于图5A-图5C以及图6-图7示出示例，也可以采用不同的驱动电路驱动第一显示区域111和第二显示区域112。
如图4B所示，像素电极122和公共电极121至少之一为梳状电极(例如，像素电极122为梳状电极)，且梳状电极包括在第一方向D1上排布的多个第一子电极191以及沿第一方向D1延伸并用于使得多个第一子电极191电连接的第二子电极192。如图4B所示，梳状电极在第二显示区域112中的部分的节距P2不等于(例如，小于)在第一显示区域111中的部分的节距P1，也即，第二显示区域112中相邻的两个第一子电极191的间距不等于(例如，小于)第一显示区域111中相邻的两个第一子电极191的间距。对于梳状电极，电场强度E与施加在梳状电极U以及梳状电极的节距d满足E＝U/d，因此，梳状电极节距d越小，电场强度E越大。此时，当共同的驱动电路150在像素电极122上施加驱动电压时，像素电极122和公共电极121在第二显示区域112形成的液晶驱动电场不等于(例如，大于)在第一显示区域111形成的液晶驱动电场，因此，位于第二显示区域112中的液晶层123的部分的透射率大于位于第一显示区域111中的液晶层123的部分的透射率，由此第二显示区域112的亮度大于第一显示区域111的亮度。
有以下几点需要说明。
(1)梳状电极不限于图4B示出的包括两个第二子电极192的结构，根据实际应用需求，梳状电极可以仅包括一个第二子电极192。
(2)在像素电极122和公共电极121均实现为梳状电极，且每个梳状电极仅包括一个第二子电极的情况下，如图4C所示，像素电极122和公共电极121可以设置在同一平面中；此时，像素电极122的第一子电极和公共电 极121的第一子电极在第一方向D1上交替排布且彼此电绝缘，且像素电极122的第二子电极和公共电极121的第二子电极在第二方向D2上相对设置。
(3)像素电极122和公共电极121相对于液晶层123的位置关系不限于图4A示出的位置关系，根据实际应用需求，相比于公共电极121，像素电极122可以更靠近液晶层123。
(4)根据实际应用需求，图4A示出的液晶显示面板100还可以实现为常白模式的水平电场型液晶显示面板，此时可以使得梳状电极在第二显示区域112中的节距P2大于在第一显示区域111中的节距P1，以使得当共同的驱动电路150在像素电极122上施加驱动电压时，像素电极122和公共电极121在第二显示区域112形成的液晶驱动电场小于在第一显示区域111形成的液晶驱动电场，由此使得位于第二显示区域112中的液晶层123的部分的透射率大于位于第一显示区域111中的液晶层123的部分的透射率，进而使得第二显示区域112的亮度大于第一显示区域111的亮度。
(5)本公开以第二显示区域在第一方向上位于第一显示区域两侧对本公开的实施例提供的显示面板做示例性说明，但本公开的实施例不限于此。根据实际应用需求，第二显示区域不仅可以在第一方向上设置在第一显示区域两侧，与此同时，还可以设置在第二方向上设置在第一显示区域两侧；此种情况下，第二显示区域设置在第一显示区域的四周。因此，不仅可以在第一方向上提升人眼观察区域的尺寸，还可以在第二方向上提升人眼观察区域的尺寸，由此提升了用户的使用自由度(例如，允许用户改变显示屏幕的放置方向)。
例如，显示子像素110还可以实现为图5A示出的显示子像素110，以使得液晶显示面板100实现为常白模式的垂直电场型液晶显示面板。如图5A所示，显示子像素110包括位于第一显示区域111和第二显示区域112中的像素电极122和公共电极121、位于像素电极122和公共电极121之间的液晶层123。
例如，位于第一显示区域111的像素电极的部分和第二显示区域112中的像素电极的部分彼此相接且通过一体化形成像素电极122，以及位于第一显示区域111的公共电极的部分和第二显示区域112中的公共电极的部分彼此相接且通过一体化形成公共电极121。像素电极122与用于同时驱动第一 显示区域111和第二显示区域112的共同的驱动电路150连接，由此，在任一时刻，第一显示区域111和第二显示区域112接收相同的驱动信号；例如，位于第一显示区域111的像素电极的部分和第二显示区域112中的像素电极的部分接收相同的驱动电压。
如图5A所示，显示子像素110还包括介电材料层124，介电材料层124设置在液晶层123以及像素电极122之间。介电材料层124包括位于第一显示区域111的第一介质单元127以及位于第二显示区域112的第二介质单元128。第一介质单元127和第二介质单元128例如可以使用氮化硅、氧化硅以及其它适用的材料制成。
需要说明的是，第一显示区域111和第二显示区域112中不限于仅设置一种介电材料，根据实际应用需求第一显示区域111和第二显示区域112中的每个可以设置至少两种介电材料，该至少两种介电材料可以在第一方向D1上并列布置或者在第三方向D3上叠置。
在本公开的一个实施例中，像素电极和公共电极之间在第二显示区域中的等效介电常数小于在第一显示区域中的等效介电常数。例如，可以通过调整电介质层的介电常数和/或其实际厚度来调整其等效介电常数。
如图5A所示，在一个示例中，第一介质单元127的厚度(在垂直于显示面板100的面板面方向上的厚度)等于第二介质单元128的厚度，且第一介质单元127的介电常数大于第二介质单元128的介电常数，由此第一介质单元127形成的电容C1大于第二介质单元128形成的电容C2；由于第一显示区域111的液晶层形成的电容Clq1等于第二显示区域111的液晶层形成的电容Clq2，因此，Clq1/C1＜Clq2/C2。根据串联电容的分压原理可知电容越大分压越小，因此，第一显示区域111的液晶层形成的电容的分压大于第二显示区域112的液晶层形成的电容的分压。此时，当共同的驱动电路150在像素电极122上施加驱动电压时，像素电极122和公共电极121在第二显示区域112形成的液晶驱动电场小于在第一显示区域111形成的液晶驱动电场，因此，位于第二显示区域112中的液晶层123的部分的透射率大于位于第一显示区域111中的液晶层123的部分的透射率，由此第二显示区域112的亮度大于第一显示区域111的亮度。
需要说明的是，图5A示出的显示子像素110的像素电极122和公共电 极121既可以采用板状电极也可以采用梳状电极，在像素电极122和公共电极121的至少一个采用梳状电极的情况下，梳状电极在第二显示区域112中的节距可以等于或不等于(例如，大于)在第一显示区域111中的节距。
例如，介电材料层124不限于设置在液晶层123以及像素电极122之间，根据实际应用需求，介电材料层124还可以设置在液晶层123以及公共电极121之间(参见图5C)，此时，在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度，具体原因可以参见图5A示出的示例，在此不再赘述。
在另一示例中，显示子像素110还可以实现为图5B示出的显示子像素110。图5B示出的显示子像素110与图5A示出的显示子像素110类似，因此，此处将仅对不同之处进行说明，相同之处不再赘述。如图5B所示，第一介质单元127的厚度不等于(例如，小于)第二介质单元128的厚度，且第一介质单元127的介电常数等于第二介质单元128的介电常数，由此可以简化制作工艺。在此种情况下，第一介质单元127形成的电容C1不等于(例如，大于)第二介质单元128形成的电容C2，且第一显示区域111的液晶层形成的电容Clq1不等于(例如，小于)第二显示区域111的液晶层形成的电容Clq2，因此，Clq1/C1＜Clq2/C2。根据串联电容的分压原理可知电容越大分压越小，因此，第一显示区域111的液晶层形成的电容的分压大于第二显示区域112的液晶层形成的电容的分压。此时，当共同的驱动电路150在像素电极122上施加驱动电压时，像素电极122和公共电极121在第二显示区域112形成的液晶驱动电场小于在第一显示区域111形成的液晶驱动电场，因此，位于第二显示区域112中的液晶层123的透射率大于位于第一显示区域111中的液晶层123的透射率，由此第二显示区域112的亮度大于第一显示区域111的亮度。
需要说明的是，对于图5B示出的显示面板，根据实际应用需求，第一介质单元127的介电常数还可以不等于第二介质单元128的介电常数，只要需要满足Clq1/C1＜Clq2/C2即可，也即，满足εd1(H/h1-1)＞εd2(H/h2-1)，这里，εd1(H/h1-1)为第一介质单元127的等效介电常数，εd2(H/h2-1)为第二介质单元128的等效介电常数，εd1为第一介质单元127的介电常数，εd2为第二介质单元128的介电常数，h1为第一介质单元127的厚度，h2为第二 介质单元128的厚度以及H为像素电极122和公共电极121之间的间距。
例如，第一介质单元127的厚度h1以及第二介质单元128的厚度h2可以根据实际应用需求进行设定，本公开的实施例对此不做具体限定。例如，第一介质单元127的厚度h1可以等于零，也即，第一显示区域111中不设置第一介质单元127。
例如，为了提供保护、支撑等作用，图4A以及图5A-图5C示出的显示子像素110还包括第一基板115和第二基板126，第一基板115和第二基板126可以是玻璃基板、石英基板、塑料基板(例如聚对苯二甲酸乙二醇酯(PET)基板)或者由其它适合的材料制成的基板。如图4A和图5A-图5C所示，第一基板115和第二基板126可以设置在显示像素的两侧，第一基板115例如设置在公共电极121的远离像素电极122的一侧，第二基板126例如设置在像素电极122的远离公共电极121的一侧。
对于图4A以及图5A-图5C示出的显示子像素110，在位于第一显示区域111的像素电极122和位于第二显示区域112的像素电极122均与用于同时驱动第一显示区域111和第二显示区域112的共同的驱动电路150连接的情况下，在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度，由此可以在不增加显示面板100的驱动电路的复杂度的情况下提升人眼观察区域的尺寸。
例如，根据实际应用需求，本公开的实施例提供的显示阵列层还可以实现为有机发光二极管(OLED)显示面板。例如，显示子像素110可以实现为图6示出的显示子像素110。如图6所示，显示子像素110包括位于第一显示区域111和第二显示区域112中的OLED，位于第一显示区域111的OLED的部分和第二显示区域112中的OLED的部分彼此电性连接且配置为接收相同的驱动电压。例如，OLED可以与用于同时驱动第一显示区域111和第二显示区域112的共同的驱动电路150连接。OLED包括顺次设置的阳极132、电阻层135、发光层133和阴极134；例如，位于第一显示区域111的阳极的部分和第二显示区域112的阳极的部分彼此相接且通过一体化形成阳极132。电阻层135包括第一电阻单元136和第二电阻单元137，第二电阻单元137的电阻率小于第一电阻单元136的电阻率，此时，OLED在第二显示区域112中的部分的电阻率小于OLED在第一显示区域111的部分中的电 阻率。由欧姆定律可知，通过导体的电流与施加在该段导体两端的电压成正比，并与该段导体的电阻成反比。因此，当向位于第一显示区域111和第二显示区域112中的OLED施加所述相同的驱动电压时(使用共同的驱动电路150在施加相同的驱动电压)，OLED在第二显示区域112的部分形成的驱动电流密度大于OLED在第一显示区域111的部分形成的驱动电流密度，由此第二显示区域112的亮度大于第一显示区域111的亮度。例如，第一电阻单元136和第二电阻单元137可以由不同的金属制成，例如，形成第二电阻单元137的金属的电阻率小于形成第一电阻单元136的金属的电阻率。
例如，根据实际应用需求，图6所示显示子像素110还可以包括功能层，该功能层包括空穴传输层、电子传输层、空穴注入层、电子注入层等的一种或多种。例如，在显示子像素110还包括功能层的情况下，显示子像素110可以无需设置电阻层135，而是可以通过使得功能层在第二显示区域112中的部分的电阻率小于功能层在第一显示区域111中的部分的电阻率来使得OLED在第二显示区域112中的部分的电阻率小于OLED在第一显示区域111中的部分的电阻率，由此可以简化制作工艺和降低显示面板的厚度。例如，可以使得第一显示区域111中的电子注入层的部分的制作材料不同与第二显示区域112中的电子注入层的部分的制作材料，由此使得OLED在第二显示区域112中的部分的电阻率不等于(例如，小于)OLED在第一显示区域111中的部分的电阻率。
例如，阳极132可以采用金属、合金、或者金属、合金与有良好导电功能的氧化物的组合制成。阳极132例如可以由下述材料中的至少一种制成：Ag、Au、Pd、Pt、Ag：Au(即Ag和Au的合金)、Ag：Pd、Ag：Pt、Al：Au、Al：Pd、Al：Pt、Ag：Au、Ag/Pd(即Ag和Pd的叠层)、Ag/Pt、Ag/ITO、Ag/IZO、Al/Au、Al/Pd、Al/Pt、Al/ITO、Al/IZO、Ag：Pd/ITO、Ag：Pt/ITO、Al：Au/ITO、Al：Pd/ITO、Al：Pt/ITO、Ag：Au/ITO、Ag：Pd/IZO、Ag：Pt/IZO、Al：Au/IZO、Al：Pd/IZO、Al：Pt/IZO、Ag：Au/IZO等。
例如，阴极134可以采用具有低功函数的材料的制成，阴极1342例如可以由下述材料中的至少一种制成：(Mg)、钙(Ca)、铟(In)、锂(Li)，铝(Al)、银(Ag)或其合金或氟化物，例如镁(Mg)－银(Ag)合金、锂(Li)-氟化合物、锂(Li)－氧(O)化合物等。
例如，为了提供保护、支撑等作用，该显示子像素110还包括第一基板115和第二基板126，第一基板115和第二基板126可以是玻璃基板、石英基板、塑料基板(例如聚对苯二甲酸乙二醇酯(PET)基板)或者由其它适合的材料制成的基板。
对于图6示出的显示子像素110，在位于第一显示区域111的OLED的部分与位于第二显示区域112的OLED的部分均与用于同时驱动第一显示区域111和第二显示区域112的共同的驱动电路150连接的情况下，在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度，由此可以在不增加显示面板100的驱动电路的复杂度的情况下提升人眼观察区域的尺寸。
例如，根据实际应用需求，显示子像素110还可以实现为图7的显示子像素110。如图7所示，该显示子像素110还包括设置在第一显示区域111中的光分散结构141。例如，光分散结构141为散射结构，包括凹凸不均的结构、棱镜结构等。光分散结构141配置为将从第一显示区域111中出射的光线扩散至第二显示区域112中，由此使得在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度大于第一显示区域111的亮度。显示子像素110还包括用于同时驱动第一显示区域111和第二显示区域112的共同的驱动电路150，并且显示子像素110位于第一显示区域111中的部分与位于第二显示区域112中的部分电性连接并且均连接至共同的驱动电路150上。由此图7的显示子像素110可以在不增加显示面板100的驱动电路的复杂度的情况下提升人眼观察区域的尺寸。
需要说明的是，根据实际应用需求，图4A、图5A-图5C以及图6示出的显示子像的第一显示区域111也可以设置光分散结构141，由此可以进一步提升第二显示区域112的亮度与第一显示区域111的亮度的比值，并因此可以在不增加显示面板100的驱动电路的复杂度的情况下进一步地提升人眼观察区域的尺寸。
例如，根据实际应用需求，显示子像素110还可以实现为图8A的显示子像素110，如图8A和图8B所示，该显示子像素110包括用于分别驱动第一显示区域111和第二显示区域112的至少部分独立的第一驱动电路161和第二驱动电路162，第一驱动电路161和第二驱动电路162可以显示过程中 向第一显示区域111和第二显示区域112提供不同的驱动信号(数据信号)，由此在显示子像素110显示画面的一个子像素的过程中，第二显示区域112的亮度可以大于第一显示区域111的亮度，由此可以提升人眼观察区域的尺寸。
用于分别驱动第一显示区域111和第二显示区域112的第一驱动电路161和第二驱动电路162可以彼此完全独立，二者连接到不同的栅线和数据线，从而由这些不同的栅线和数据线控制以及施加驱动信号。
或者，第一驱动电路161和第二驱动电路162可以共享部分电路，但是二者至少具有不同的输出端例如以连接到不同的像素电极，从而可以分别驱动第一显示区域111和第二显示区域112。
例如，在显示子像素110实现为液晶子像素的情况下，如图8A所示，显示子像素110包括位于第一显示区域111和第二显示区域112的不同且彼此绝缘的第一像素电极163和第二像素电极164；并且第一像素电极163和第二像素电极164分别与第一驱动电路161和第二驱动电路164电连接。例如，第一驱动电路161包括第一开关晶体管，第二驱动电路164包括第二开关晶体管，第一开关晶体管和第二开关晶体管连接到相同的栅线但连接到不同的数据线，因此二者可以共享同一栅极，但是具有不同的源极、漏极，从而可以同时驱动第一显示区域111和第二显示区域112；或者，第一开关晶体管和第二开关晶体管连接到相同的数据线但连接到不同的栅线，因此二者可以共享相同的与数据线(例如，同一数据线)连接的源极(或漏极)，但具有不同的栅极和不同的漏极(或源极)，由此二者可以被分时控制以分别驱动第一显示区域111和第二显示区域112。
又例如，在显示子像素110实现为OLED子像素的情况下，显示子像素110包括位于第一显示区域111和第二显示区域112的不同且彼此绝缘的第一阳极和第二阳极；并且第一阳极和第二阳极分别与第一驱动电路161和第二驱动电路164电连接，此时第一显示区域111和第二显示区域112可以具有公共阴极(例如，位于第一显示区域111的阴极和位于第二显示区域112的阴极彼此电连接且一体化形成)。再例如，根据实际应用需求，在显示子像素110实现为OLED子像素的情况下，显示子像素110包括位于第一显示区域111和第二显示区域112的不同且彼此绝缘的第一阴极和第二阴极；并 且第一阴极和第二阴极分别与第一驱动电路161和第二驱动电路164电连接，此时第一显示区域111和第二显示区域112可以具有公共阳极(例如，位于第一显示区域111的阳极和位于第二显示区域112的阳极彼此电连接且一体化形成)。类似于液晶子像素的情况，第一驱动电路161包括的第一开关晶体管和第二驱动电路164包括的第二开关晶体管可以共享部分电极，以同时或分时分别驱动第一显示区域111和第二显示区域112。又例如，第一驱动电路161还包括第一驱动晶体管、第一发光控制晶体管等部件，第二驱动电路164包括第二驱动晶体管、第二发光控制晶体管等部件，这些驱动晶体管、发光控制晶体管等也可以至少部分相同，这里不再详述。
例如，如图8B所示，根据实际应用需求，第一显示区域111和第二显示区域112可以分别包括多个独立驱动的亚子像素193。通过控制每个亚子像素193出射光线的强度，可以使得第二显示区域112的亮度可以大于第一显示区域111的亮度。例如，根据实际应用需求，亚子像素193可以包括一个微LED或一个微OLED。例如，亚子像的尺寸可以根据实际需求和工艺水平进行设定，亚子像的尺寸例如可以为5微米-50微米。
例如，图9是本公开至少一个实施例提供的一种显示装置10的示意图。该显示装置10包括本公开任一实施例所述的显示面板100。例如，该显示装置10可以实现为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有3D显示功能的产品或部件。
需要说明的是，对于该显示面板100和显示装置10的其它组成部分(例如，薄膜晶体管、控制装置、图像数据编码/解码装置、行扫描驱动器、列扫描驱动器、时钟电路等)可以采用适用的部件，这些均是本领域的普通技术人员所应该理解的，在此不做赘述，也不应作为对本公开的限制。该显示装置10可以提升人眼观察区域的尺寸。
本公开的至少一个实施例又提供了一种驱动显示面板的驱动方法，包括：向显示面板的显示子像素的第一显示区域施加第一显示数据电压；以及向显示面板的显示子像素的第二显示区域施加第二显示数据电压。在显示画面的一个子像素的过程中，第二显示区域的亮度大于第一显示区域的亮度；第一显示区域位于显示子像素的中间部分，第二显示区域在第一方向上位于第一显示区域两侧。
在一个示例中，第一显示数据电压与第二显示数据电压不同；此种情况下，显示子像素包括用于分别驱动第一显示区域和第二显示区域的至少部分独立的第一驱动电路和第二驱动电路；第一显示数据电压通过第一驱动电路施加在第一显示区域中，以及第二显示数据电压通过第二驱动电路施加第二显示区域中。
在另一个示例中，第一显示数据电压与第二显示数据电压彼此相同；此种情况下，显示子像素包括用于同时驱动第一显示区域和第二显示区域的共同的驱动电路；共同的驱动电路将第一显示数据电压施加在第一显示区域中，以及将第二显示数据电压施加第二显示区域中。
例如，以图8A和图8B所示出的情形为例，如图10所示，该驱动方法可以包括以下步骤：
步骤S10：通过第一驱动电路向第一显示区域施加第一显示数据电压。
步骤S20：通过第二驱动电路向第二显示区域施加第二显示数据电压，此处，第一显示数据电压与第二显示数据电压不同。
通过使得向第一显示区域施加第一显示数据电压不等于(例如，大于)向第二显示区域施加第二显示数据电压，可以使得在显示子像素显示画面的一个子像素的过程中，第二显示区域的亮度大于第一显示区域的亮度，由此该驱动方法可以提升显示面板以及包括该显示面板的显示装置的人眼观察区域的尺寸。
虽然上文中已经用一般性说明及具体实施方式，对本公开作了详尽的描述，但在本公开实施例基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本公开精神的基础上所做的这些修改或改进，均属于本公开要求保护的范围。
以上所述仅是本公开的示范性实施方式，而非用于限制本公开的保护范围，本公开的保护范围由所附的权利要求确定。

Claims (21)

  1. 一种显示面板，包括显示子像素，
    其中，所述显示子像素包括位于中间部分的第一显示区域以及在第一方向上位于所述第一显示区域两侧的第二显示区域；以及
    在显示画面的一个子像素的过程中，所述第二显示区域的亮度大于所述第一显示区域的亮度。
  2. 根据权利要求1所述的显示面板，其中，所述显示面板为液晶显示面板，所述显示子像素包括位于所述第一显示区域和所述第二显示区域中的像素电极和公共电极，其中，位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分彼此电性连接，且位于所述第一显示区域的公共电极的部分和位于所述第二显示区域中的公共电极的部分彼此电性连接；以及
    当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场不等于在所述第一显示区域形成的液晶驱动电场。
  3. 根据权利要求2所述的显示面板，其中，当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场小于在所述第一显示区域形成的液晶驱动电场。
  4. 根据权利要求3所述的显示面板，其中，所述显示子像素包括液晶层以及介电材料层；
    所述介电材料层设置在所述液晶层以及所述像素电极或公共电极之间，且包括位于所述第一显示区域的第一介质单元以及位于所述第二显示区域的第二介质单元；以及
    所述第二介质单元的等效介电常数小于所述第一介质单元的等效介电常数。
  5. 根据权利要求4所述的显示面板，其中，所述第二介质单元的厚度等于所述第一介质单元的厚度，且所述第二介质单元的介电常数小于所述第一 介质单元的介电常数。
  6. 根据权利要求2所述的显示面板，其中，当向位于所述第一显示区域的像素电极的部分和位于所述第二显示区域中的像素电极的部分施加相同的驱动电压时，所述像素电极和所述公共电极在所述第二显示区域形成的液晶驱动电场大于在所述第一显示区域形成的液晶驱动电场。
  7. 根据权利要求6所述的显示面板，其中，所述像素电极和所述公共电极至少之一为梳状电极，且所述梳状电极在所述第二显示区域中的部分的节距小于所述梳状电极在所述第一显示区域中的部分的节距。
  8. 根据权利要求1所述的显示面板，其中，所述显示面板为有机发光二极管显示面板，所述显示子像素包括位于所述第一显示区域和所述第二显示区域中的有机发光二极管，其中，位于所述第一显示区域的有机发光二极管的部分和位于所述第二显示区域中的有机发光二极管的部分彼此电性连接且配置为接收相同的驱动电压；以及
    当向位于所述第一显示区域的有机发光二极管的部分和位于所述第二显示区域中的有机发光二极管的部分施加所述相同的驱动电压时，所述有机发光二极管在所述第二显示区域形成的驱动电流的密度大于所述有机发光二极管在所述第一显示区域形成的驱动电流的密度。
  9. 根据权利要求8所述的显示面板，其中，所述有机发光二极管在所述第二显示区域中的部分的电阻率小于在所述第一显示区域中的部分的电阻率。
  10. 根据权利要求1-9任一所述的显示面板，其中，所述显示子像素还包括设置在所述第一显示区域的出光侧的光分散结构；以及
    所述光分散结构配置为将从所述第一显示区域中出射的光线扩散至所述第二显示区域中。
  11. 根据权利要求1-10任一项所述的显示面板，其中，所述显示子像素包括用于同时驱动所述第一显示区域和所述第二显示区域的共同的驱动电路。
  12. 根据权利要求1所述的显示面板，其中，所述显示子像素包括用于分别驱动所述第一显示区域和所述第二显示区域的至少部分独立的第一驱动电路和第二驱动电路。
  13. 根据权利要求12所述的显示面板，其中，所述显示子像素包括位于所述第一显示区域的第一像素电极以及位于所述第二显示区域的第二像素电极；
    所述第一像素电极和所述第二像素电极彼此绝缘；以及
    所述第一像素电极和所述第二像素电极分别与所述第一驱动电路和所述第二驱动电路电连接。
  14. 根据权利要求1-13任一项所述的显示面板，其中，所述第二显示区域的亮度为所述第一显示区域的亮度1.05-1.25倍。
  15. 根据权利要求1-14任一项所述的显示面板，其中，所述第二显示区域在所述第一方向上的尺寸小于所述显示子像素在所述第一方向上的尺寸；以及
    所述第二显示区域在所述第一方向上的尺寸与所述显示子像素在所述第一方向上的尺寸的比值为0.01-0.5。
  16. 根据权利要求1-15任一项所述的显示面板，其中，所述第二显示区域在所述第一方向上的尺寸小于等于所述透光区在所述第一方向上的尺寸；以及
    所述第二显示区域在所述第一方向上的尺寸与所述透光区在所述第一方向上的尺寸的比值为0.7-1。
  17. 根据权利要求1-16任一项所述的显示面板，其中，所述显示面板包括视差屏障和多个所述显示子像素；
    所述视差屏障设置在所述显示子像素的出光侧且包括在所述第一方向上交替排布的遮光区和透光区；以及
    多个所述显示子像素在所述第一方向上并列布置。
  18. 一种显示装置，包括：如权利要求1-17任一所述的显示面板。
  19. 一种用于驱动显示面板的驱动方法：包括：
    向所述显示面板的显示子像素的第一显示区域施加第一显示数据电压；以及
    向所述显示面板的显示子像素的第二显示区域施加第二显示数据电压，其中，在显示画面的一个子像素的过程中，所述第二显示区域的亮度大于所述第一显示区域的亮度；
    所述第一显示区域位于所述显示子像素的中间部分，所述第二显示区域在第一方向上位于所述第一显示区域两侧。
  20. 根据权利要求19所述的显示面板的驱动方法，其中，所述第一显示数据电压与所述第二显示数据电压不同；
    所述显示子像素包括用于分别驱动所述第一显示区域和所述第二显示区域的至少部分独立的第一驱动电路和第二驱动电路；以及
    所述第一显示数据电压通过所述第一驱动电路施加在所述第一显示区域中，以及所述第二显示数据电压通过所述第二驱动电路施加所述第二显示区域中。
  21. 根据权利要求19所述的显示面板的驱动方法，其中，所述第一显示数据电压与所述第二显示数据电压相同；
    所述显示子像素包括用于同时驱动所述第一显示区域和所述第二显示区域的共同的驱动电路；
    所述共同的驱动电路将所述第一显示数据电压施加在所述第一显示区域中，以及将所述第二显示数据电压施加所述第二显示区域中。
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