WO2020098129A1 - Display panel - Google Patents

Display panel Download PDF

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Publication number
WO2020098129A1
WO2020098129A1 PCT/CN2019/070080 CN2019070080W WO2020098129A1 WO 2020098129 A1 WO2020098129 A1 WO 2020098129A1 CN 2019070080 W CN2019070080 W CN 2019070080W WO 2020098129 A1 WO2020098129 A1 WO 2020098129A1
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WO
WIPO (PCT)
Prior art keywords
pixel
sub
white sub
white
display panel
Prior art date
Application number
PCT/CN2019/070080
Other languages
French (fr)
Chinese (zh)
Inventor
柳铭岗
陈书志
Original Assignee
深圳市华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to CN201811341032.2A priority Critical patent/CN109459892A/en
Priority to CN201811341032.2 priority
Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Publication of WO2020098129A1 publication Critical patent/WO2020098129A1/en

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells

Abstract

The present disclosure provides a display panel, comprising: a plurality of scan lines; a plurality of data lines intersecting with the plurality of scan lines corresponding thereto; a plurality of pixel units defined by the scan lines and the corresponding data lines intersecting with each other, one of the plurality of pixel units comprising a color sub-pixel and a white sub-pixel, wherein the color sub-pixel is used to provide a color picture, and the white sub-pixel is used to provide a white picture; and a plurality of active components electrically connecting the scan lines and the data lines with the pixel units corresponding thereto, and respectively controlling the color sub-pixel and the white sub-pixel.

Description

Display panel Technical field

The present disclosure relates to a display panel, and particularly to a display panel of a transparent display.

Background technique

In addition to displaying images on transparent displays, users can also observe the images behind them through the display panel. The transparent display has a simple structure, is convenient to install and has no space limitation, and can be applied to handheld devices, merchandise windows, and the like.

In a traditional display, after the backlight passes through various structural layers such as polarizers, color resists, and liquid crystals, only 5% to 10% of the transmitted light remains. The light transmittance of a transparent display must reach more than 10%. However, since the liquid crystal display must be equipped with a polarizing film and a color filter, there are limitations on the transmittance. Therefore, low light transmittance is an urgent problem to be overcome for transparent displays. In order to improve the light transmittance of transparent displays, the current research direction is mostly on the improvement of display panels. Please refer to FIG. 1, which shows a schematic diagram of a display panel 10 for a transparent display in the prior art. The display panel 10 uses color filters arranged in four colors of R (red), G (green), B (blue), and W (white), in which white pixels W are added to increase the transparency of the transparent liquid crystal display. However, the increase in penetration rate in the prior art is limited, and it will cause a decrease in color performance.

In view of this, it is necessary to propose a display panel of a transparent display to solve the problems in the prior art.

technical problem

In order to solve the above-mentioned problems of the prior art, an object of the present disclosure is to provide a display panel of a transparent display, which improves the transmittance of the transparent liquid crystal display by changing the display panel.

Technical solution

To achieve the above object, the present disclosure provides a display panel, including: a plurality of scan lines; a plurality of data lines that intersect with the corresponding scan lines; a plurality of pixel units defined by the intersection of the scan lines and the corresponding data lines, and wherein A pixel unit includes: a color sub-pixel and a white sub-pixel, wherein the color sub-pixel is used to provide a color picture, and the white sub-pixel is used to provide a white picture, wherein the plurality of pixel units include: red pixels The unit includes: a red sub-pixel to provide red light and a first white sub-pixel; a blue pixel unit includes: a blue sub-pixel to provide blue light and a second white sub-pixel; and a green pixel unit , Adjacent to the red pixel unit and the blue pixel unit, including: a green sub-pixel to provide green light, wherein the green pixel unit does not include a white sub-pixel to provide a white picture; and A plurality of active elements are electrically connected to the scan line, the data line, and the corresponding pixel unit to control the color sub-pixel and the white sub-pixel, respectively; wherein the area of the green sub-pixel is equal to the The sum of the areas of the red sub-pixel and the first white sub-pixel; and wherein the ratio of the area of the first white sub-pixel to the sum of the areas of the first white sub-pixel and the red sub-pixel is less than the second The area of the white sub-pixel accounts for the ratio of the total area of the second white sub-pixel and the blue sub-pixel.

In one of the preferred embodiments of the present disclosure, two adjacent scan lines are defined as a group of scan lines, and an area formed by the intersection of two adjacent scan lines and two adjacent data lines defines the pixel unit In each pixel unit, the color sub-pixel and the white sub-pixel are electrically connected to the same data line through one of the active elements.

In one of the preferred embodiments of the present disclosure, the two adjacent data lines are defined as a set of data lines, and the area formed by the intersection of the two adjacent sets of data lines and the two adjacent scan lines defines the pixel unit In each pixel unit, the color sub-pixel and the white sub-pixel are respectively electrically connected to two adjacent scanning lines through one of the active elements.

In one of the preferred embodiments of the present disclosure, the color sub-pixel includes a first pixel electrode, and the white sub-pixel includes a second pixel electrode, wherein the first pixel electrode and the second pixel electrode have a multi-domain structure.

In one of the preferred embodiments of the present disclosure, the multi-domain structure is four domains.

In one of the preferred embodiments of the present disclosure, both the first pixel electrode and the second pixel electrode include a trunk electrode and a plurality of strip-shaped branch electrodes, wherein the trunk electrode is a cross shape, and the strip-shaped branch One end of the electrode is connected to the stem electrode, the other end extends away from the stem electrode, and there is a gap between the two strip-shaped branch electrodes.

The present disclosure also provides a display panel, including: a plurality of scan lines; a plurality of data lines that intersect the corresponding scan lines; a plurality of pixel units defined by the intersection of the scan lines and the corresponding data lines, and one of the pixel units includes : Color sub-pixels and white sub-pixels, wherein the color sub-pixels are used to provide color pictures, and the white sub-pixels are used to provide white pictures; and a plurality of active elements are electrically connected to the scan lines and the data lines And corresponding pixel units are used to control the color sub-pixel and the white sub-pixel, respectively.

In one of the preferred embodiments of the present disclosure, two adjacent scan lines are defined as a group of scan lines, and an area formed by the intersection of two adjacent scan lines and two adjacent data lines defines the pixel unit In each pixel unit, the color sub-pixel and the white sub-pixel are electrically connected to the same data line through one of the active elements.

In one of the preferred embodiments of the present disclosure, the two adjacent data lines are defined as a set of data lines, and the area formed by the intersection of the two adjacent sets of data lines and the two adjacent scan lines defines the pixel unit In each pixel unit, the color sub-pixel and the white sub-pixel are respectively electrically connected to two adjacent scanning lines through one of the active elements.

In one of the preferred embodiments of the present disclosure, the plurality of pixel units include: a red pixel unit, including: a red sub-pixel to provide red light, and a first white sub-pixel; a blue pixel unit, including: blue The sub-pixel is used to provide blue light and a second white sub-pixel; and the green pixel unit is disposed adjacent to the red pixel unit and the blue pixel unit, including: a green sub-pixel to provide green light, And a third white sub-pixel, wherein in one of the pixel units, the area of the white sub-pixel accounts for 5% to 50% of the total area of the white sub-pixel and the color sub-pixel.

In one of the preferred embodiments of the present disclosure, the plurality of pixel units include: a red pixel unit, including: a red sub-pixel to provide red light, and a first white sub-pixel; a blue pixel unit, including: blue The sub-pixel is used to provide blue light and a second white sub-pixel; and the green pixel unit is disposed adjacent to the red pixel unit and the blue pixel unit, including: a green sub-pixel to provide green light, The green pixel unit does not include white sub-pixels to provide a white picture.

In one of the preferred embodiments of the present disclosure, the area of the green sub-pixel is equal to the sum of the areas of the red sub-pixel and the first white sub-pixel.

In one of the preferred embodiments of the present disclosure, the ratio of the area of the first white sub-pixel to the sum of the areas of the first white sub-pixel and the red sub-pixel is smaller than the area of the second white sub-pixel The ratio of the sum of the areas of the second white sub-pixel and the blue sub-pixel.

In one of the preferred embodiments of the present disclosure, the color sub-pixel includes a first pixel electrode, and the white sub-pixel includes a second pixel electrode, wherein the first pixel electrode and the second pixel electrode have a multi-domain structure.

In one of the preferred embodiments of the present disclosure, the multi-domain structure is four domains.

In one of the preferred embodiments of the present disclosure, both the first pixel electrode and the second pixel electrode include a trunk electrode and a plurality of strip-shaped branch electrodes, wherein the trunk electrode is a cross shape, and the strip-shaped branch One end of the electrode is connected to the stem electrode, the other end extends away from the stem electrode, and there is a gap between the two strip-shaped branch electrodes.

Beneficial effect

Compared with the prior art, the present disclosure improves the transmittance of the transparent liquid crystal display by providing color sub-pixels and white sub-pixels in a single pixel unit and driving them with independent active elements. Furthermore, by changing the proportion of the area occupied by the white sub-pixels in different color sub-pixels, the color performance of the display can be effectively improved.

BRIEF DESCRIPTION

FIG. 1 shows a schematic diagram of a display panel used for a transparent display in the prior art.

FIG. 2 shows a schematic diagram of a display panel according to the first preferred embodiment of the present disclosure.

FIG. 3 shows a schematic diagram of pixel electrodes of the display panel of FIG. 2.

FIG. 4 shows a schematic diagram of a display panel according to the second preferred embodiment of the present disclosure.

FIG. 5 shows a schematic diagram of a display panel according to the third preferred embodiment of the present disclosure.

Embodiments of the invention

In order to make the above-mentioned and other objects, features, and advantages of the present disclosure more comprehensible, the preferred embodiments of the present disclosure will be cited below in conjunction with the accompanying drawings, which will be described in detail below.

Please refer to FIG. 2, which shows a schematic diagram of a display panel 20 according to the first preferred embodiment of the present disclosure. Preferably, the display panel 20 is applied in a transparent display. In addition to displaying images on transparent displays, users can also observe the images behind them through the display panel. The transparent display includes an active matrix substrate and a pair of opposed substrates facing the active matrix substrate, and a liquid crystal layer sandwiched between the two substrates, wherein the display panel 20 is formed on the active matrix substrate. Transparent display can use vertical alignment (Vertical Alignment, VA), planar switch (In-Plane Switching (IPS), fringe field switching (Fringe Liquid crystal display technologies such as Field Switching (FFS) and Twisted Nematic (TN) can also be applied to horizontal pixel technologies such as Tri-gate drive architecture, but not limited to this.

As shown in FIG. 2, the display panel 20 includes a plurality of scan lines G1-G6, a plurality of data lines D1-D5, a plurality of pixel units P1-P3, and a plurality of active elements T1-T6. Several scan lines G1-G6 intersect several data lines D1-D5. The pixel units P1-P3 are defined by the intersection of the scanning lines G1-G6 and the corresponding data lines D1-D5, and each pixel unit P1-P3 is located between two adjacent scanning lines and two adjacent data lines. The active elements T1-T6 are electrically connected to the corresponding scan lines, data lines, and pixel units.

As shown in FIG. 2, the pixel units P1-P3 include color sub-pixels R, G, B and white sub-pixels W1-W3, respectively. The color sub-pixels R, G, B are used to provide a color picture, and the white sub-pixels W1-W3 are used to provide a white picture. Specifically, the pixel unit includes a plurality of red pixel units P1, a plurality of blue pixel units P2, and a plurality of green pixel units P3, of which three pixels are the red pixel unit P1, the blue pixel unit P2, and the green pixel unit P3 The unit is a set of continuous arrangement. The red pixel unit P1 includes a red sub-pixel R and a first white sub-pixel W1, wherein the image signal supplied from the red sub-pixel R to the transparent display includes red luminance information, and the image signal supplied from the first white sub-pixel W1 to the transparent display is Contains white brightness information. The blue pixel unit P2 includes a blue sub-pixel B and a second white sub-pixel W2, wherein the image signal supplied by the blue sub-pixel B to the transparent display includes blue luminance information, and the second white sub-pixel W2 is supplied to the transparent display The image signal contains white brightness information. The green pixel unit P3 includes a green sub-pixel G and a third white sub-pixel W3, wherein the image signal supplied from the green sub-pixel G to the transparent display includes green luminance information, and the image signal supplied from the third white sub-pixel W3 to the transparent display is Contains white brightness information. In the first preferred embodiment, the green pixel unit P3 is disposed adjacent to the red pixel unit P1 and the blue pixel unit P2, but it is not limited thereto. It should be understood that the white sub-pixels W1-W3 may be made of a white color resist material, or may be made of a transparent material such as PFA or polystyrene (PS).

As shown in FIG. 2, in the first preferred embodiment, two adjacent scanning lines are defined as a group of scanning lines, for example, the first scanning line G1 and the second scanning line G2 are the first group of scanning lines and the third scanning line. The line G3 and the fourth scan line G4 are the second group of scan lines, and the fifth scan line G5 and the sixth scan line G6 are the third group of scan lines. The area formed by the intersection of the adjacent two sets of scan lines and the adjacent two data lines defines the pixel units P1-P3. For example, the red pixel unit P1 is located in the area formed by the intersection of the first set of scan lines, the second set of scan lines, the first data lines D1, and the second data lines D2. In addition, the green pixel unit P3 adjacent to the red pixel unit P1 is a region where the first group of scan lines, the second group of scan lines, the second data line D2, and the third data line D3 intersect.

As shown in FIG. 2, in the three pixel units P1-P3 arranged in sequence, the color sub-pixels R, G, B and the corresponding white sub-pixels W1-W3 are each electrically connected to the same data line through one of the active elements. Specifically, the red sub-pixel R is electrically connected to the first data line D1 through the first active element T1, and the first white sub-pixel W1 is electrically connected to the same first data line D1 through the second active element T2. Also, the green sub-pixel R is electrically connected to the second data line D2 through the third active element T3, and the third white sub-pixel W3 is electrically connected to the same second data line D2 through the fourth active element T4. Also, the blue sub-pixel B is electrically connected to the third data line D3 through the fifth active element T5, and the second white sub-pixel W2 is electrically connected to the same third data line D3 through the sixth active element T6. With this design, the color sub-pixels R, G, B and white sub-pixels W1-W3 are each driven by different active elements T1-T6, and with the integrated circuit (IC) and system control and calculation of the display, the white can be controlled independently The brightness of the sub-pixels W1-W3 can further increase the transmittance.

As shown in FIG. 2, in the three pixel units P1-P3, the proportion of white sub-pixels W1-W3 is equal, where the proportion of white sub-pixels W1-W3 may be 5% -50%. Specifically, the ratio of the area of the first white sub-pixel W1 to the sum of the areas of the first white sub-pixel W1 and the red sub-pixel R (that is, the space coverage ratio) is equal to the area of the second white sub-pixel W2 to the second white The ratio of the total area of the sub-pixel W2 and the blue sub-pixel B is equal to the ratio of the area of the third white sub-pixel W3 to the total area of the third white sub-pixel W3 and the green sub-pixel G. Compared with the prior art method of additionally providing a white pixel unit independently, the present disclosure provides color active sub-pixels R, G, B and white sub-pixels W1-W3 in a single pixel unit, and uses an independent active element T1- Driven by T6, it can not only improve the transparency of the transparent liquid crystal display, but also make the liquid crystal display show the best color performance, that is, it has better color saturation.

Please refer to FIG. 3, which shows a schematic diagram of the pixel electrode 21 of the display panel of FIG. 2. The color sub-pixels R, G, B respectively include a first pixel electrode E1, and the white sub-pixels W1-W3 include a second pixel electrode E2, wherein the first pixel electrode E1 and the second pixel electrode E2 have a multi-domain structure. Specifically, both the first pixel electrode E1 and the second pixel electrode E2 include a trunk electrode and a plurality of strip-shaped branch electrodes. Hereinafter, the first pixel electrode E1 of the red sub-pixel R will be used as an example for description. The first pixel electrode E1 of the red sub-pixel R includes a trunk electrode 211 and a plurality of strip-shaped branch electrodes 212. The trunk electrode 211 has a cross shape, and the strip-shaped branch electrodes 212 are distributed in the four areas divided by the trunk electrode 211. One end of the strip-shaped branch electrode 212 is connected to the trunk electrode 211, and the other end extends in a direction away from the trunk electrode 211, and there is a gap between the two strip-shaped branch electrodes 212. Therefore, in the first preferred embodiment, the multi-domain structure is four domains. That is to say, an eight-domain design will be adopted in a single pixel unit P1-P3, in which the color sub-pixels R, G, and B each use four domains, and the white sub-pixels W1-W3 also use four domains. With this design, the effect of compensating the pixel viewing angle can be effectively achieved.

Please refer to FIG. 4, which is a schematic diagram of a display panel 30 according to a second preferred embodiment of the present disclosure. The display panel 30 includes a plurality of scan lines G1-G3, a plurality of data lines D1-D10, a plurality of pixel units P1-P3, and a plurality of active elements. Several scan lines G1-G3 intersect several data lines D1-D10. The pixel units P1-P3 are defined by the intersection of the scanning lines G1-G3 and the corresponding data lines D1-D10, and each pixel unit P1-P3 is located between two adjacent scanning lines and two adjacent data lines. The active element is electrically connected to the corresponding scan line, data line, and pixel unit. The display panel 30 of the second preferred embodiment of the present disclosure is substantially the same as the display panel 20 of the first preferred embodiment, and the difference between the two is that the display panel 30 of the second preferred embodiment uses different scan line and data line designs, specific description as follows. In addition, portions of the display panel 30 of the second preferred embodiment that are the same as the display panel 20 of the first preferred embodiment will not be repeated here.

As shown in FIG. 4, in the second preferred embodiment, two adjacent data lines are defined as a group of data lines, for example, the first data line D1 and the second data line D2 are the first group of data lines and the third data Line D3 and fourth data line D4 are the second set of data lines, fifth data line D5 and sixth data line D6 are the third set of data lines, and so on. The area formed by the intersection of two adjacent sets of data lines and two adjacent scan lines defines pixel units P1-P3. For example, the red pixel unit P1 is located in the area formed by the intersection of the first set of data lines, the second set of data lines, the first scan line G1, and the second scan line G2. In addition, the green pixel unit P3 adjacent to the red pixel unit P1 is an area formed by the intersection of the second group of data lines, the third group of data lines, the first scan line G1, and the second scan line G2.

As shown in FIG. 4, among the three pixel units P1-P3 arranged in sequence, the color sub-pixels R, G, B and the white sub-pixels W1-W3 are each electrically connected to two adjacent scan lines through one of the active elements . Specifically, the red sub-pixel R is electrically connected to the second scan line G2 through the active element, and the first white sub-pixel W1 is electrically connected to the adjacent first scan line G1 through the active element. Also, the green sub-pixel R is electrically connected to the second scan line G2 through the active element, and the third white sub-pixel W3 is electrically connected to the adjacent first scan line G1 through the active element. Also, the blue sub-pixel B is electrically connected to the second scan line G2 through the active element, and the second white sub-pixel W2 is electrically connected to the adjacent first scan line G1 through the active element. With this design, the color sub-pixels R, G, B and the white sub-pixels W1-W3 are driven by different active components, and with the integrated circuit (IC) and system control and calculation of the display, the white sub-pixel W1 can be independently controlled -The brightness of W3 can further improve the penetration rate.

Please refer to FIG. 5, which shows a schematic diagram of a display panel 40 according to a third preferred embodiment of the present disclosure. The display panel 40 includes a plurality of scan lines G1-G3, a plurality of data lines D1-D10, a plurality of pixel units P1-P3, and a plurality of active elements. Several scan lines G1-G3 intersect several data lines D1-D10. The pixel units P1-P3 are defined by the intersection of the scanning lines G1-G3 and the corresponding data lines D1-D10, and each pixel unit P1-P3 is located between two adjacent scanning lines and two adjacent data lines. The active element is electrically connected to the corresponding scan line, data line, and pixel unit. The display panel 40 of the third preferred embodiment of the present disclosure is substantially the same as the display panel 30 of the second preferred embodiment, the difference between the two is that the white sub-pixels of the pixel unit of the display panel 40 of the third preferred embodiment have different areas, The details are as follows. In addition, portions of the display panel 40 of the third preferred embodiment that are the same as the display panel 30 of the second preferred embodiment will not be repeated here.

As shown in FIG. 5, the pixel units P1-P3 include color sub-pixels R, G, B and white sub-pixels W1-W3. The color sub-pixels R, G, B are used to provide a color picture, and the white sub-pixels W1-W3 are used to provide a white picture. Specifically, the pixel unit includes a plurality of red pixel units P1, a plurality of blue pixel units P2, and a plurality of green pixel units P3, of which three pixels are the red pixel unit P1, the blue pixel unit P2, and the green pixel unit P3 The unit is a set of continuous arrangement. The red pixel unit P1 includes a red sub-pixel R and a first white sub-pixel W1. The blue pixel unit P2 includes a blue sub-pixel B and a second white sub-pixel W2. The green pixel unit P3 includes a green sub-pixel G.

As shown in FIG. 5, in each pixel unit P1-P3, the area of the white sub-pixel accounts for 0% to 50% of the total area of the white sub-pixel and the color sub-pixel. Since the green pixel unit P3 does not include white sub-pixels to provide a white screen, in the green pixel unit P3, the ratio of the area of the white sub-pixel to the area of the green sub-pixel G is 0%. When the red pixel unit P1 and the green pixel unit P3 have the same size, the area of the green sub-pixel G is equal to the sum of the areas of the red sub-pixel R and the first white sub-pixel W1. Furthermore, the ratio of the area of the first white sub-pixel W1 to the total area of the first white sub-pixel W1 and the red sub-pixel R is smaller than the area of the second white sub-pixel W2 to the second white sub-pixel W2 and blue sub-pixel The ratio of the total area of B. Comparing the transmittance of the green sub-pixel G, the red sub-pixel R, and the blue sub-pixel B, the green sub-pixel G is higher, the red sub-pixel R is the second, and the blue sub-pixel B is the last. Therefore, in the third preferred embodiment, by making the white sub-pixels of the pixel unit of the display panel 40 have different areas, the color expression presented by the display can be effectively improved.

In summary, the present disclosure improves the transmittance of transparent liquid crystal displays by providing color sub-pixels and white sub-pixels in a single pixel unit and driving them with independent active elements. Furthermore, by changing the proportion of the area occupied by the white sub-pixels in different color sub-pixels, the color performance of the display can be effectively improved.

The above are only the preferred embodiments of the present disclosure. It should be noted that for those skilled in the art, without departing from the principles of the present disclosure, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection of the present disclosure range.

Claims (16)

  1. A display panel, including:
    Several scan lines;
    Several data lines intersect the corresponding scan lines;
    A plurality of pixel units are defined by the intersection of the scan line and the corresponding data line, and one of the pixel units includes: a color sub-pixel and a white sub-pixel, wherein the color sub-pixel is used to provide a color picture, and The white sub-pixel is used to provide a white picture, wherein the plurality of pixel units include:
    The red pixel unit includes: a red sub-pixel for providing red light and the first white sub-pixel;
    The blue pixel unit includes: a blue sub-pixel for providing blue light and a second white sub-pixel; and
    The green pixel unit is disposed adjacent to the red pixel unit and the blue pixel unit, and includes: a green sub-pixel to provide green light, wherein the green pixel unit does not include a white sub-pixel to provide a white picture Pixels; and
    A plurality of active elements, electrically connected to the scan line, the data line, and the corresponding pixel unit, respectively used to control the color sub-pixel and the white sub-pixel;
    Where the area of the green sub-pixel is equal to the sum of the areas of the red sub-pixel and the first white sub-pixel; and
    The ratio of the area of the first white sub-pixel to the sum of the areas of the first white sub-pixel and the red sub-pixel is smaller than the area of the second white sub-pixel to the second white sub-pixel The ratio of the total area of the blue sub-pixels is described.
  2. The display panel according to claim 1, wherein two adjacent scan lines are defined as a group of scan lines, and an area formed by intersections of two adjacent scan lines and two adjacent data lines defines the pixel unit, In each of the pixel units, the color sub-pixel and the white sub-pixel are each electrically connected to the same data line through one of the active elements.
  3. The display panel according to claim 1, wherein the two adjacent data lines are defined as a group of data lines, and the area formed by the intersection of the two adjacent sets of data lines and the two adjacent scanning lines defines the pixel unit, In each of the pixel units, the color sub-pixel and the white sub-pixel are respectively electrically connected to two adjacent scanning lines through one of the active elements.
  4. The display panel of claim 1, wherein the color sub-pixel includes a first pixel electrode, and the white sub-pixel includes a second pixel electrode, wherein the first pixel electrode and the second pixel electrode have a multi-domain structure.
  5. The display panel of claim 4, wherein the multi-domain structure is a four-domain.
  6. The display panel of claim 4, wherein the first pixel electrode and the second pixel electrode each include a trunk electrode and a plurality of strip-shaped branch electrodes, wherein the trunk electrode is a cross-shaped, and the strip-shaped branch electrodes One end is connected to the stem electrode, the other end extends away from the stem electrode, and there is a gap between the two strip-shaped branch electrodes.
  7. A display panel, including:
    Several scan lines;
    Several data lines intersect the corresponding scan lines;
    A plurality of pixel units are defined by the intersection of the scan line and the corresponding data line, and one of the pixel units includes: a color sub-pixel and a white sub-pixel, wherein the color sub-pixel is used to provide a color picture, and the White sub-pixels are used to provide a white picture; and
    A plurality of active elements are electrically connected to the scan line, the data line, and the corresponding pixel unit to control the color sub-pixel and the white sub-pixel, respectively.
  8. The display panel according to claim 7, wherein two adjacent scanning lines are defined as a group of scanning lines, and an area formed by the intersection of two adjacent scanning lines and two adjacent data lines defines the pixel unit, In each of the pixel units, the color sub-pixel and the white sub-pixel are each electrically connected to the same data line through one of the active elements.
  9. The display panel according to claim 7, wherein two adjacent data lines are defined as a group of data lines, and an area formed by the intersection of two adjacent sets of data lines and two adjacent scanning lines defines the pixel unit, In each of the pixel units, the color sub-pixel and the white sub-pixel are respectively electrically connected to two adjacent scanning lines through one of the active elements.
  10. The display panel of claim 7, wherein the plurality of pixel units include:
    The red pixel unit includes: a red sub-pixel for providing red light and the first white sub-pixel;
    The blue pixel unit includes: a blue sub-pixel for providing blue light and a second white sub-pixel; and
    The green pixel unit is disposed adjacent to the red pixel unit and the blue pixel unit, and includes: a green sub-pixel for providing green light, and a third white sub-pixel, wherein in one of the pixel units, the The area of the white sub-pixel accounts for 5% to 50% of the total area of the white sub-pixel and the color sub-pixel.
  11. The display panel of claim 7, wherein the plurality of pixel units include:
    The red pixel unit includes: a red sub-pixel for providing red light and the first white sub-pixel;
    The blue pixel unit includes: a blue sub-pixel for providing blue light and a second white sub-pixel; and
    The green pixel unit is disposed adjacent to the red pixel unit and the blue pixel unit, and includes: a green sub-pixel to provide green light, wherein the green pixel unit does not include a white sub-pixel to provide a white picture Pixels.
  12. The display panel of claim 11, wherein the area of the green sub-pixel is equal to the sum of the areas of the red sub-pixel and the first white sub-pixel.
  13. The display panel of claim 11, wherein the ratio of the area of the first white sub-pixel to the sum of the areas of the first white sub-pixel and the red sub-pixel is smaller than the area of the second white sub-pixel The ratio of the sum of the areas of the second white sub-pixel and the blue sub-pixel.
  14. The display panel of claim 7, wherein the color sub-pixel includes a first pixel electrode, and the white sub-pixel includes a second pixel electrode, wherein the first pixel electrode and the second pixel electrode have a multi-domain structure.
  15. The display panel of claim 14, wherein the multi-domain structure is a four-domain.
  16. The display panel of claim 14, wherein the first pixel electrode and the second pixel electrode each include a trunk electrode and a plurality of strip-shaped branch electrodes, wherein the trunk electrode is a cross-shaped, and the strip-shaped branch electrodes One end is connected to the stem electrode, the other end extends away from the stem electrode, and there is a gap between the two strip-shaped branch electrodes.
PCT/CN2019/070080 2018-11-12 2019-01-02 Display panel WO2020098129A1 (en)

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