CN112785916A

CN112785916A - Display device

Info

Publication number: CN112785916A
Application number: CN202010777448.XA
Authority: CN
Inventors: 戴名柔; 蔡嘉豪
Original assignee: Innolux Corp
Current assignee: Innolux Corp
Priority date: 2019-11-01
Filing date: 2020-08-05
Publication date: 2021-05-11

Abstract

The present disclosure provides a display device including a substrate, two adjacent pixels and two adjacent light-shielding layers. Two adjacent pixels are respectively arranged on the substrate and are arranged along a first direction. And the two adjacent shading layers are respectively arranged between the two adjacent pixels and the substrate. One of the two adjacent pixels comprises a sub-pixel and a low-sensitivity sub-pixel. Two adjacent light-shielding layers are separated by a gap region. The gap regions correspond to the low-sensitivity sub-pixel arrangement. Two adjacent light-shielding layers are separated by a gap region provided corresponding to the low-sensitivity sub-pixel. The display device can reduce the problem of image quality reduction caused by light leakage current.

Description

Display device

Technical Field

The present disclosure relates to electronic devices, and more particularly, to a display device capable of reducing image quality degradation caused by light leakage.

Background

Flat display panels have been widely used in electronic devices such as mobile phones, televisions, monitors, tablet computers, displays for vehicles, wearable devices, and desktop computers. With the rapid development of electronic products, the requirements for display quality on the electronic products are higher and higher, so that the electronic devices for displaying are continuously improved towards larger or higher resolution display effects.

Disclosure of Invention

The present disclosure provides a display device which can reduce the problem of image quality degradation caused by light leakage current.

According to an embodiment of the present disclosure, a display device includes a substrate, two adjacent pixels and two adjacent light-shielding layers. Two adjacent pixels are arranged on the substrate and are arranged along a first direction. And the two adjacent shading layers are respectively arranged between the two adjacent pixels and the substrate. One of the two adjacent pixels comprises a sub-pixel and a low-sensitivity sub-pixel. Two adjacent light-shielding layers are separated by a gap region. The gap regions correspond to the low-sensitivity sub-pixel arrangement.

In view of the above, in the display device according to the embodiment of the present disclosure, the two adjacent light shielding layers are respectively disposed on the two adjacent pixels, and the gap region is disposed corresponding to the low-sensitivity sub-pixel, so that the display device according to the embodiment of the present disclosure can reduce the problem of image quality degradation caused by the light leakage current. In addition, by disposing the gap region between two adjacent light-shielding layers, the display device of this embodiment can reduce the problem of mutual interference of signals (for example, mutual interference between the light-shielding layer and the gate electrode, or mutual interference between the light-shielding layer and the source electrode, but not limited thereto) caused by the two adjacent light-shielding layers being connected together.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1A is a schematic bottom view of a display device according to an embodiment of the disclosure;

FIG. 1B is a schematic cross-sectional view of the display device of FIG. 1A along the sectional line A-A';

FIG. 2 is a schematic bottom view of a display device according to another embodiment of the disclosure;

fig. 3 is a schematic bottom view of a display device according to another embodiment of the disclosure.

Description of the reference numerals

100. 100a, 100 b: a display device;

110: a substrate;

120. 120 ', 120 b', 121 ', 121 a', 121b, 122 ', 122 a', 122b, 123 ', 123 b': a pixel;

1201. 1201 ', 1202', 1211 ', 1212': a sub-pixel;

1203. 1203 ', 1213', 1233: a low-sensitivity sub-pixel;

130. 130 ', 130a ', 130b ', 131 ', 131a ', 131b ', 132 ', 132a ', 132b, 133 ', 133a ', 133b ': a light-shielding layer;

140. 140 ', 141', 142 ', 143': a gap region;

151. 152, 153, 154, 155, IL: an insulating layer;

160: a pixel electrode;

161: a common electrode;

ARM1, ARM 2: an arm portion;

CH1, CH 2: a channel region;

cst: a storage capacitor;

GE: a gate electrode;

GI: a gate insulating layer;

l1, L2, L3, L4: a length;

SD 1: a source electrode;

SD 2: a drain electrode;

and SE: a U-shaped active region;

SL: scanning a line;

t1, T2: thickness;

a TFT: a transistor driving unit;

x: a first direction;

y: a second direction;

z: and a third direction.

Detailed Description

The present disclosure may be understood by reference to the following detailed description taken in conjunction with the accompanying drawings, in which it is noted that, for the sake of clarity and brevity of the drawings, the various drawings in the present disclosure depict only some of the electronic devices and are not necessarily drawn to scale. In addition, the number and size of the elements in the figures are merely illustrative and are not intended to limit the scope of the present disclosure.

In the following specification and claims, the words "comprise", "comprising", "includes" and "including" are open-ended words that should be interpreted as meaning "including, but not limited to …".

It will be understood that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer or intervening elements or layers may be present (not directly). In contrast, when an element is referred to as being "directly on" or "directly connected to" another element or film, there are no intervening elements or films present between the two.

Although the terms first, second, and third … may be used to describe various components, the components are not limited by this term. This term is used only to distinguish a single component from other components within the specification. The same terms may not be used in the claims, but instead first, second, and third … may be substituted for the elements in the claims in the order in which they are presented. Therefore, in the following description, a first constituent element may be a second constituent element in the claims.

In some embodiments of the present disclosure, terms such as "connected," "interconnected," and the like, with respect to bonding, connecting, and the like, may refer to two structures as being in direct contact, or may also refer to two structures as not being in direct contact, unless specifically defined otherwise, with respect to the two structures, with another structure being interposed therebetween. And the terms coupled and connected should also be construed to include both structures being movable or both structures being fixed. Furthermore, the term "coupled" encompasses any direct and indirect electrical connection.

In the present disclosure, the length and the width may be measured by an optical microscope, and the thickness may be measured by a cross-sectional image of an electron microscope, but not limited thereto. In addition, there may be some error in any two values or directions for comparison.

It is to be understood that the following illustrative embodiments may be implemented by replacing, recombining, and combining features of several different embodiments without departing from the spirit of the present disclosure. Features of the various embodiments may be combined and matched as desired, without departing from the spirit or ambit of the invention.

The electronic device of the present disclosure may include, but is not limited to, a display device, an antenna device, a sensing device, a touch display device (touch display), a curved display device (curved display), or a non-rectangular display device (free shape display). The electronic device can be a bendable or flexible electronic device. The display device may include, for example, but not limited to, a Light Emitting Diode (LED), a liquid crystal (liquid crystal), a fluorescent light (fluorescence), a phosphorescent light (phosphorescence), other suitable display media, or a combination thereof. The light emitting diode may include, for example, an Organic Light Emitting Diode (OLED), an inorganic light emitting diode (inorganic light-emitting diode), a submillimeter light emitting diode (mini LED), a micro LED, a Quantum Dot (QD) light emitting diode (QLED, QDLED), or other suitable materials or any combinations thereof, but is not limited thereto. The display device may also include, but is not limited to, a tiled display device, for example. The antenna device may be, for example, a liquid crystal antenna, but is not limited thereto. The antenna device may include, for example, but is not limited to, an antenna splicing device. It should be noted that the electronic device can be any permutation and combination of the foregoing, but not limited thereto. In addition, the exterior of the electronic device may be rectangular, circular, polygonal, a shape with curved edges, or other suitable shapes. The electronic device may have a peripheral system such as a drive system, a control system, a light source system, a shelf system …, etc. to support the display device, the antenna device, or the tile device. The present disclosure will be described with reference to a display device, but the present disclosure is not limited thereto.

Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Fig. 1A is a schematic bottom view of a display device according to an embodiment of the disclosure. FIG. 1B is a cross-sectional view of the display device of FIG. 1A along the section line A-A'. For clarity and convenience of illustration, fig. 1A omits several elements in the display device, such as but not limited to the substrate 110.

Referring to fig. 1A and fig. 1B, the display device 100 of the present embodiment includes a substrate 110, two

adjacent pixels

120 and 121, and two adjacent light-shielding

layers

130 and 131. Two

adjacent pixels

120, 121 are disposed on the substrate 110 and arranged along the first direction X. One 120 of the two

adjacent pixels

120, 121 comprises sub-pixels 1201, 1202 and a low sensitivity sub-pixel 1203. The other 121 of the two

adjacent pixels

120, 121 also comprises a sub-pixel 1211, a sub-pixel 1212 and a low sensitivity sub-pixel 1213. In the present embodiment, the substrate 110 may include a rigid substrate, a flexible substrate, or a combination thereof. For example, the material of the substrate 110 may include glass, quartz, sapphire (sapphire), ceramic, Polycarbonate (PC), Polyimide (PI), polyethylene terephthalate (PET), other suitable substrate materials, or a combination thereof, but is not limited thereto. In the present embodiment, the first direction X, the second direction Y and the third direction Z are different directions, for example, the first direction X is an extending direction of the scan line SL, the third direction Z can be a normal direction of the substrate 110, the second direction Y and the third direction Z are perpendicular to the first direction X, and the second direction Y is perpendicular to the third direction Z, but not limited thereto.

In addition, in the present embodiment, the display device 100 further includes a pixel 122, a pixel 123, a pixel 120 ', a pixel 121', a pixel 122 ', a pixel 123', a light-shielding layer 132, a light-shielding layer 133, a light-shielding layer 130 ', a light-shielding layer 131', a light-shielding layer 132 ', and a light-shielding layer 133'. The pixel 120 'includes sub-pixels 1201', 1202 'and a low-sensitivity sub-pixel 1203', and the pixel 121 'may also include a sub-pixel 1211', a sub-pixel 1212 'and a low-sensitivity sub-pixel 1213'.

Specifically, referring to fig. 1A, in the bottom view of the display device 100 of the present embodiment, the

pixels

122, 120, 121, and 123 are sequentially arranged along the first direction X, and the pixels 122 ', 120', 121 ', and 123' are also sequentially arranged along the first direction X. In the first direction X, the pixel 122 is adjacent to the pixel 120, the pixel 120 is adjacent to the pixel 121, the pixel 121 is adjacent to the pixel 123, the pixel 122 'is adjacent to the pixel 120', the pixel 120 'is adjacent to the pixel 121', and the pixel 121 'is adjacent to the pixel 123'. In addition, in the second direction Y, the pixels 122 are arranged corresponding to the pixels 122 'and adjacent to each other, the pixels 120 are arranged corresponding to the pixels 120' and adjacent to each other, the pixels 121 are arranged corresponding to the pixels 121 'and adjacent to each other, and the pixels 123 are arranged corresponding to the pixels 123' and adjacent to each other.

Referring to fig. 1A and fig. 1B, in the present embodiment, two adjacent light-shielding

layers

130 and 131 are respectively disposed between two

adjacent pixels

120 and 121 and the substrate 110. The light-shielding

layers

132, 133, 132 ', 130', 131 ', 133' are also respectively disposed between the corresponding

pixels

122, 123, 122 ', 120', 121 ', 123' and the substrate 110. The light-shielding

layers

132, 130, 131 and 133 are sequentially arranged along the first direction X, and the light-shielding layers 132 ', 130', 131 'and 133' are also sequentially arranged along the first direction X. In the first direction X, the light-shielding layer 132 is adjacent to the light-shielding layer 130, the light-shielding layer 130 is adjacent to the light-shielding layer 131, the light-shielding layer 131 is adjacent to the light-shielding layer 133, the light-shielding layer 132 ' is adjacent to the light-shielding layer 130 ', the light-shielding layer 130 ' is adjacent to the light-shielding layer 131 ', and the light-shielding layer 131 ' is adjacent to the light-shielding layer. In this embodiment, the material of the light-shielding

layers

130, 131, 132, 133, 132 ', 130', 131 ', 133' may include a low-reflection metal, such as molybdenum, titanium, aluminum, gold, silver, copper, or an oxide, nitride, or alloy thereof, but is not limited thereto.

In this embodiment, one light-shielding layer 130 of the two adjacent light-shielding

layers

130 and 131 is disposed at least corresponding to the sub-pixel 1201 and the sub-pixel 1202, and the other light-shielding layer 131 of the two adjacent light-shielding

layers

130 and 131 is disposed at least corresponding to the sub-pixel 1211 and the sub-pixel 1212. That is, in the present embodiment, one light-shielding layer 130 of the two adjacent light-shielding

layers

130 and 131 may overlap the sub-pixel 1201 and the sub-pixel 1202 along the first direction X, and the other light-shielding layer 131 of the two adjacent light-shielding

layers

130 and 131 may overlap the sub-pixel 1211 and the sub-pixel 1212 along the first direction X. It should be noted that, in the present disclosure, the number of sub-pixels overlapped by a light-shielding layer is not limited to the embodiment.

In detail, in the present embodiment, the display device 100 further includes

gap regions

140, 141, 142, 143, 140 ', 141', 142 ', 143'. The two adjacent light-shielding

layers

132 and 130 may be separated by a gap region 142, the two adjacent light-shielding

layers

130 and 131 may be separated by a gap region 140, the two adjacent light-shielding

layers

131 and 133 may be separated by a gap region 141, the light-shielding layer 133 and another adjacent light-shielding layer (not numbered) may be separated by a gap region 143, the two adjacent light-shielding layers 132 ' and 130 ' may be separated by a gap region 142 ', the two adjacent light-shielding layers 130 ' and 131 ' may be separated by a gap region 140 ', the two adjacent light-shielding layers 131 ' and 133 ' may be separated by a gap region 141 ', and the light-shielding layer 133 ' and another adjacent light-shielding layer (not numbered) may be separated by a gap region 143 '. Therefore, in the present embodiment, each of the

pixels

120, 121, 122, 123, 120 ', 121', 122 ', 123' has a corresponding light-

shielding layer

130, 131, 132, 133, 130 ', 131', 132 ', 133' and a

corresponding gap region

140, 141, 142, 143, 140 ', 141', 142 ', 143'.

More specifically, in the present embodiment, gap region 140 may be disposed corresponding to low-sensitivity sub-pixel 1203, gap region 141 may be disposed corresponding to low-sensitivity sub-pixel 1213, gap region 140 'may be disposed corresponding to low-sensitivity sub-pixel 1203', and gap region 141 'may be disposed corresponding to low-sensitivity sub-pixel 1213'. That is, in the third direction Z, the low sensitivity sub-pixel 1203 overlaps the gap area 140, the low sensitivity sub-pixel 1213 overlaps the gap area 141, the low sensitivity sub-pixel 1203 'overlaps the gap area 140', and the low sensitivity sub-pixel 1213 'overlaps the gap area 141'. In addition, in the present embodiment, in the second direction Y, the gap region 142 may correspond to the gap region 142 ', the gap region 140 may correspond to the gap region 140', the gap region 141 may correspond to the gap region 141 ', and the gap region 143 may correspond to the gap region 143', but is not limited thereto.

With continued reference to fig. 1A and 1B, in the present embodiment, the low-sensitivity sub-pixel 1203 may include a transistor-driver (TFT) unit. The transistor driving unit TFT is disposed on the substrate 110, and includes a gate electrode GE, an insulating layer IL, a portion of the gate insulating layer GI, a U-shaped active region SE including channel regions CH1 and CH2, a source electrode SD1, and a drain electrode SD 2. In the present embodiment, the material of the source electrode SD1 and/or the drain electrode SD2 may include a transparent conductive material or a non-transparent conductive material, such as indium tin oxide, indium zinc oxide, indium oxide, zinc oxide, tin oxide, a metal material (e.g., aluminum, molybdenum, copper, silver, etc.), other suitable materials, or a combination thereof, but is not limited thereto. In the embodiment, the material of the U-shaped active region SE may include amorphous silicon (amorphous silicon), Low Temperature Polysilicon (LTPS), metal oxide (for example, indium gallium zinc oxide IGZO), other suitable materials, or a combination thereof, but is not limited thereto. In other embodiments, the different transistor driving units TFT may comprise different materials of the U-shaped active region SE, but not limited thereto. In the present embodiment, the gate electrode GE of the transistor driving unit TFT may be a Top gate (Top gate) structure, but is not limited thereto. In some embodiments, the gate GE may be a Bottom gate (Bottom gate) or Dual gate (Dual gate or double gate) structure.

In the present embodiment, the scan lines SL and the data lines (not shown) are disposed on the substrate 110, and the scan lines SL and the data lines intersect with each other. The first direction X may be regarded as an extending direction of the scan line SL, and the second direction Y may be regarded as an extending direction of the data line, but not limited thereto. In the present embodiment, the scan line SL can be electrically connected to the gate GE of the transistor driving unit TFT, and the data line can be electrically connected to the source SD1 of the transistor driving unit TFT, so that the transistor driving unit TFT can be electrically connected to the scan line SL and the data line through the gate GE and the source SD1, respectively. In some embodiments, the material of the scan line SL and the data line may include molybdenum (Mo), titanium (Ti), tantalum (Ta), niobium (niobium, Nb), hafnium (Hf), nickel (nickel, Ni), chromium (Cr), cobalt (Co), zirconium (zirconia, Zr), tungsten (tungsten, W), aluminum (aluminum, Al), copper (copper, Cu), silver (argentum, Ag), other suitable metals, or alloys or combinations thereof, but is not limited thereto.

In the present embodiment, as shown in fig. 1A, in the third direction Z, the gap region 140 may overlap with the U-shaped active region SE of the transistor driving unit TFT in the low-sensitivity sub-pixel 1203. Specifically, the gap region 140 may overlap one of the ARM portions ARM2 of the U-shaped active region SE in the low-sensitivity sub-pixel 1203 and not overlap the other ARM portion ARM1 of the U-shaped active region SE in the low-sensitivity sub-pixel 1203. In addition, in fig. 1A, the sub-pixel regions of the sub-pixels, such as 1201 to 1203, include all of one ARM2 and a portion of the other ARM1 of the U-shaped active region SE, but the present disclosure is not limited thereto, and the range of the active region included in the sub-pixels may vary according to the actual product design.

In addition, in the embodiment, as shown in fig. 1B, the light shielding layer 130 is disposed between the channel CH1 of the U-shaped active region SE and the substrate 110, so as to reduce the generation of the photo leakage current caused by the direct irradiation of the light from the lower side of the substrate 110 to the channel CH1 of the U-shaped active region SE. The light-shielding layer 130 is disposed corresponding to the channel region CH 1. Specifically, as shown in fig. 1A and 1B, in the third direction Z, the light shielding layer 130 overlaps the channel region CH1 of one ARM1 of the U-shaped active region SE in the low-sensitivity sub-pixel 1203, and does not overlap the channel region CH2 of the other ARM2 of the U-shaped active region SE in the low-sensitivity sub-pixel 1203, but is not limited thereto. In addition, in the present embodiment, as shown in fig. 1A, in the third direction Z, the light-shielding layer 130 may overlap the two channel regions CH1, CH2 of the U-shaped active region SE in the sub-pixel 1201 and may overlap the two channel regions CH1, CH2 of the U-shaped active region SE in the sub-pixel 1202, so that the photo leakage current in the sub-pixels 1201, 1202 may be reduced.

In the embodiment, the thickness T1 of the light-shielding layer 130 may be 500 angstroms (angstrom) to 3000 angstroms (500 angstroms ≦ T1 ≦ 3000 angstroms) so that the light transmittance of the light-shielding layer 130 may be less than 5% or less than 0.1%, thereby reducing the problem of image quality degradation caused by light leakage current. Therefore, when the thickness of the light-shielding layer 130 is less than 500 angstroms, the light transmittance of the light-shielding layer 130 is greater than 5%, and a problem of image quality degradation due to a light leakage current occurs. When the thickness of the light-shielding layer 130 is greater than 3000 angstroms, although the light transmittance of the light-shielding layer 130 may be less than 0.1%, the light-shielding layer 130 is too thick, so that the U-shaped active region SE or the insulating layer 151 is not easily formed on the light-shielding layer 130, and thus the U-shaped active region SE is disconnected and is disconnected or is in contact with the light-shielding layer 130 to cause short circuit. In the present embodiment, the thickness T1 is, for example, the maximum thickness of the light shielding layer 130 measured along the third direction Z. The transmittance is defined as the ratio of the light intensity of the light emitting surface to the light intensity of the light receiving surface after the light penetrates the film when the film is irradiated by the light.

Referring to fig. 1B, in the present embodiment, the display device 100 further includes an insulating layer 151, an insulating layer 152, an insulating layer 153, an insulating layer 154, an insulating layer 155, a pixel electrode 160, and a common electrode 161. The insulating layer 151 is disposed between the transistor driving unit TFT and the substrate 110, and covers the light-shielding layer 130 and the substrate 110. The insulating layer 152 is disposed between the source SD1 (or the drain SD2) and the gate insulating layer GI, and covers the gate GE, the insulating layer IL and the gate insulating layer GI. The insulating layer 153 is disposed on the substrate 110 and covers the source SD1, the drain SD2, and the insulating layer 152. The insulating

layers

153 and 151 are disposed on opposite sides of the transistor driving unit TFT, respectively. The insulating layer 154 is disposed on the insulating layer 153, such that the insulating layer 154 and the insulating layer 152 are respectively disposed on two opposite sides of the insulating layer 153. The pixel electrode 160 is disposed on the insulating layer 154 and electrically connected to the drain SD 2. The insulating layer 155 is disposed on the pixel electrode 160 and covers the pixel electrode 160 and the insulating layer 154. The common electrode 161 is disposed on the insulating layer 155, such that the common electrode 161 and the pixel electrode 160 are respectively disposed at two opposite sides of the insulating layer 155. In some embodiments, the insulating layer 151, the gate insulating layer GI, the insulating layer IL, the insulating layer 152, the insulating layer 153, the insulating layer 154, and the insulating layer 155 may be a single layer or a multi-layer structure, and may include, for example, an organic material (e.g., silicon nitride, etc.), an inorganic material, or a combination thereof, but not limited thereto. In some embodiments, the materials of the pixel electrode 160 and the common electrode 161 may include a transparent conductive material, but are not limited thereto. It should be noted that the structure shown in fig. 1B is only an example, and the structure of the display device in the present disclosure is not limited thereto.

In the embodiment, the thickness T2 of the insulating layer 155 can be 300 to 2000 angstroms (300 angstroms & lt T2 & lt 2000 angstroms) so that the storage capacitor Cst between the common electrode 161 and the pixel electrode 160 can stabilize the pixel voltage. When the thickness of the insulating layer 155 is greater than 2000 angstroms, the storage capacitor Cst is too small to stabilize the pixel voltage. When the thickness of the insulating layer 155 is less than 300 a, a short circuit may be caused by the contact of the common electrode 161 and the pixel electrode 160 due to the thinness of the insulating layer 155. In the present embodiment, the thickness T2 may be, for example, the maximum thickness of the insulating layer 155 measured along the third direction Z.

In this embodiment, the low-sensitivity sub-pixel 1203 may be a blue sub-pixel, the sub-pixel 1201 may be a red sub-pixel, and the sub-pixel 1202 may be a green sub-pixel, but not limited thereto. In some embodiments, low-sensitivity subpixel 1203 may also be a red subpixel, subpixel 1201 may be a green subpixel, and subpixel 1202 may be a blue subpixel. In some embodiments, the low-sensitivity sub-pixels may also be a blue sub-pixel and a red sub-pixel, and the sub-pixels may be green sub-pixels. That is, the low sensitivity sub-pixel 1203 may be made not to be a green sub-pixel.

In detail, in the present embodiment, the red sub-pixel can emit red light, the green sub-pixel can emit green light, and the blue sub-pixel can emit blue light. For example, if the sensitivities of the human eyes to different colors are quantified, the sensitivity of the human eyes to red light may be about 17, the sensitivity of the human eyes to green light may be about 50, and the sensitivity of the human eyes to blue light may be about 8. That is, the human eye is more sensitive to green light than to blue light as well as red light. That is, human eyes are more sensitive to the brightness difference of green light than the brightness difference of blue light and the brightness difference of red light.

For example, in one embodiment, the ideal luminance without light leakage current is used as a reference, and when light is irradiated, light leakage current is generated in each sub-pixel of the pixel, so that the luminance of each sub-pixel of the pixel is different due to the light leakage current. The sub-pixels 1201, 1202 assume that the difference in sub-pixel luminance due to the photo leakage current is 1.5% due to the function of the light-shielding layer 130, and the difference in sub-pixel luminance due to the photo leakage current is increased to 3% due to the gap region 140. Under this assumption, when the sub-pixel 1201 is a red sub-pixel, the sub-pixel 1202 is a green sub-pixel, and the sub-pixel 1203 corresponding to the gap region 140 is a blue sub-pixel, the human eye can perceive the overall luminance difference of the pixel 120 as [ (1.5% × 17) + (1.5% × 50) + (3% × 8) ]/(17+50+ 8): 1.67%; however, when the sub-pixel 1201 is a red sub-pixel, the sub-pixel 1202 is a blue sub-pixel, and the sub-pixel corresponding to the gap region 140 is a green sub-pixel, the difference in the overall brightness of the pixel 120, which can be perceived by human eyes, is increased to [ (1.5% × 17) + (1.5% × 8) + (3% × 50) ]/(17+50+8) × 2.5%. Therefore, in the present embodiment, in order to effectively reduce the feeling of human eyes on the overall brightness difference of the pixel, the two channel regions corresponding to the green sub-pixel with higher sensitivity are both covered by the light shielding layer, and the gap region is disposed in the blue sub-pixel with lower sensitivity or the red sub-pixel with second highest sensitivity. For example, in the present embodiment, when the light shielding layer covers two channel regions corresponding to the green sub-pixel with higher sensitivity, covers two channel regions corresponding to the red sub-pixel with second highest sensitivity, and covers one channel region corresponding to the blue sub-pixel with lower sensitivity (i.e. exposes the other channel region corresponding to the blue sub-pixel), the problem of image quality degradation caused by light leakage current can be reduced. More specifically, when the sub-pixels with larger brightness difference are sub-pixels with lower eye sensitivity (e.g. blue sub-pixels), the human eye is less likely to detect the brightness difference of the individual pixels caused by the photo leakage current, and further less likely to detect the problem of the image quality degradation of the whole image due to the photo leakage current.

It should be noted that, although red, blue and green lights are taken as examples in the present embodiment, the disclosure is not limited thereto. Considering that the human eyes have different sensitivities to light with different wavelengths, in the present disclosure, based on the maximum sensitivity of the human eyes to a specific wavelength in the visible light spectrum, when the sensitivity of the human eyes to the color light emitted by a sub-pixel is lower than 50% of the maximum sensitivity (0 ≦ sensitivity/maximum sensitivity < 50%), the sub-pixel may be called a low-sensitivity sub-pixel.

In this embodiment, the

gap regions

140, 141, 142, 143, 140 ', 141', 142 ', 143' are disposed to reduce the mutual interference of signals caused by the connection of the light-shielding

layers

130, 131, 132, 133, 130 ', 131', 132 ', 133', and to reduce the variation of the threshold voltage (Vth) of the transistor driving unit TFT. In addition, although each

pixel

120, 121, 122, 123, 120 ', 121', 122 ', 123' in the present embodiment has a

corresponding gap region

140, 141, 142, 143, 140 ', 141', 142 ', 143', the present disclosure does not limit the corresponding relationship between the number of pixels and the number of gap regions. That is, in some embodiments, there may be only one corresponding gap region for every two pixels, i.e., there is no gap region in each low-sensitivity sub-pixel, as shown in fig. 2 and 3. In some embodiments, there may be one corresponding gap region for every N pixels, where N is greater than or equal to 1.

In short, in the display device 100 of the present embodiment, the two adjacent light shielding layers 130 and 131 are respectively disposed on the two

adjacent pixels

120 and 121, and the gap region 140 is disposed corresponding to the low-sensitivity sub-pixel 1203, so that the display device 100 of the present embodiment can reduce the problem of image quality degradation caused by photo leakage current. In addition, by disposing the gap region 140 between two adjacent light-shielding

layers

130 and 131, the display device of the present embodiment can reduce the problem of mutual interference of signals (for example, but not limited to, the mutual interference between the light-shielding layer 130 and the gate electrode GE, or the mutual interference between the light-shielding layer 130 and the source electrode SD 1) caused by the two adjacent light-shielding layers being connected together.

Other examples will be listed below for illustration. It should be noted that the following embodiments follow the reference numerals and parts of the contents of the foregoing embodiments, wherein the same reference numerals are used to indicate the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

Fig. 2 is a schematic bottom view of a display device according to another embodiment of the disclosure. Referring to fig. 1A and fig. 2, the display device 100a of the present embodiment is substantially similar to the display device 100 of fig. 1A, and therefore, the same and similar components in the two embodiments are not repeated herein. The display device 100a of the present embodiment is different from the display device 100 in that, in the display device 100a of the present embodiment, the light-shielding layer 132a and the light-shielding layer 130 are connected to each other, the light-shielding layer 131a and the light-shielding layer 133 are connected to each other, the light-shielding layer 132a 'and the light-shielding layer 130' are connected to each other, and the light-shielding layer 131a 'and the light-shielding layer 133' are connected to each other.

Specifically, in the present embodiment, the pixel 120, the pixel 123, the pixel 120 'and the pixel 123' are respectively provided with a corresponding gap region 140, a corresponding gap region 143, a corresponding gap region 140 'and a corresponding gap region 143', wherein the gap region 140 may correspond to the gap region 140 'in the second direction Y, and the corresponding gap region 143 may correspond to the gap region 143' in the second direction Y. None of the

pixels

122a, 121a, 122a 'and 121 a' have a gap region. Therefore, in the present embodiment, the light-shielding

layers

132a and 130 corresponding to the

adjacent pixels

122a and 120 are connected to each other to form the light-shielding layer 130a, the light-shielding

layers

131a and 133 corresponding to the

adjacent pixels

121a and 123 are connected to each other to form the light-shielding layer 133a, the light-shielding layers 132a 'and 130' corresponding to the adjacent pixels 122a 'and 120' are connected to each other to form the light-shielding layer 130a ', and the light-shielding layers 131 a' and 133 'corresponding to the adjacent pixels 121 a' and 123 'are connected to each other to form the light-shielding layer 133 a'.

Therefore, in the display device 100a of the present embodiment, each two adjacent pixels have a corresponding gap region. For example, the

adjacent pixels

120 and 121a together have only one corresponding gap region 140, and the

adjacent pixels

121a and 123 together have only one corresponding gap region 143. Similarly, adjacent pixel 120 'and pixel 121 a' together have only one corresponding gap region 140 ', and adjacent pixel 121 a' and pixel 123 'together have only one corresponding gap region 143'.

In addition, in the embodiment, the length L1 of one light shielding layer 130a of the two adjacent

light shielding layers

130a and 133a along the first direction X may be greater than five times the length L2 of the low-sensitivity sub-pixel 1203 along the first direction X. The length L3 of the other light-shielding layer 133a of the two adjacent light-shielding

layers

130a, 133a along the first direction X may also be greater than five times the length L4 of the low-sensitivity sub-pixel 1233 along the first direction X, but the disclosure is not limited thereto. It should be noted that, in the present disclosure, the lengths L1, L3 of the light-shielding layers along the first direction X may be defined as the maximum distance in the first direction X between two endpoints (e.g., the leftmost endpoint and the rightmost endpoint of the light-shielding layer 130a in fig. 2) of a light-shielding layer along the first direction X in the top view, and the lengths L2, L4 of the low-sensitivity sub-pixel may be defined as the shortest distance from the left side of the data line on the left side of the sub-pixel along the first direction X to the left side of the data line on the right side of the sub-pixel. In addition, the number of pixels or sub-pixels overlapped by the sub-pixel light-shielding layer is not limited to fig. 2.

In addition, although the gap region 140 may correspond to the gap region 140 'in the second direction Y and the gap region 143 may correspond to the gap region 143' in the second direction Y in the embodiment, the present disclosure does not limit the correspondence relationship between the gap regions. That is, in some embodiments, there may be no correspondence between two gap regions in the second direction Y. For example, in some embodiments, the plurality of gap regions may be arranged in a staggered manner, as shown in fig. 3.

Fig. 3 is a schematic bottom view of a display device according to another embodiment of the disclosure. Referring to fig. 1A and fig. 3, the display device 100b of the present embodiment is substantially similar to the display device 100 of fig. 1A, and therefore, the same and similar components in the two embodiments are not repeated herein. The display device 100b of the present embodiment is different from the display device 100 mainly in that in the display device 100b of the present embodiment, the light-shielding layer 132b and the light-shielding layer 130 are connected to each other, the light-shielding layer 131b and the light-shielding layer 133 are connected to each other, and the light-shielding layer 130b 'and the light-shielding layer 131' are connected to each other.

Specifically, in the present embodiment, the pixel 120, the pixel 123, the pixel 122 'and the pixel 121' are respectively provided with the corresponding

gap regions

140, 143, 142 'and 141'. The gap regions 140 do not correspond to the gap regions 142 'in the second direction Y, but are staggered with the gap regions 142'. The gap regions 143 do not correspond to the gap regions 141 'in the second direction Y, but are staggered with the gap regions 141'. That is, the

gap regions

142 ', 140, 141' and 143 may be staggered. In the present embodiment, no gap region is disposed in the

pixels

122b, 121b, 120b 'and 123 b'. Therefore, in the present embodiment, the light-shielding

layers

132b and 130 corresponding to the

adjacent pixels

122b and 120 are connected to each other to form the light-shielding layer 130b, the light-shielding

layers

131b and 133 corresponding to the

adjacent pixels

121b and 123 are connected to each other to form the light-shielding layer 133b, and the light-shielding layers 130b ' and 131 ' corresponding to the adjacent pixels 120b ' and 121 ' are connected to each other to form the light-shielding layer 131b '.

Therefore, in the display device 100b of the present embodiment, each two adjacent pixels have a corresponding gap region. For example, the adjacent pixel 120 and the pixel 121b have a corresponding gap region 140, the adjacent pixel 121b and the pixel 123 have a corresponding gap region 143, the adjacent pixel 122 'and the pixel 120 b' have a corresponding gap region 142 ', and the adjacent pixel 121' and the pixel 123b 'have a corresponding gap region 141'.

In addition, in the embodiment, the length L1 of one light shielding layer 130b of the two adjacent light shielding layers 130b and 133b along the first direction X may be greater than five times the length L2 of the low-sensitivity sub-pixel 1203 along the first direction X. The length L3 of the other light-shielding layer 133b of the two adjacent light-shielding

layers

130b and 133b along the first direction X may be greater than five times the length L4 of the low-sensitivity sub-pixel 1233 along the first direction X, but the disclosure is not limited thereto. In the present disclosure, the number of pixels or sub-pixels overlapped by the light-shielding layer is not limited to fig. 3. When the gap regions are arranged in a staggered manner as shown in fig. 3, the sub-pixel positions with larger brightness difference caused by the photo leakage current can be dispersed, so that the user is less likely to perceive the problem of the overall image quality degradation caused by the photo leakage current.

In summary, in the display device according to the embodiment of the disclosure, two adjacent light shielding layers are respectively disposed on two adjacent pixels, and the gap region is disposed corresponding to the low-sensitivity sub-pixel, so that the display device according to the embodiment of the disclosure can reduce the problem of image quality degradation caused by light leakage current. In addition, by disposing the gap region between two adjacent light-shielding layers, the display device of this embodiment can reduce the problem of mutual interference of signals (for example, mutual interference between the light-shielding layer and the gate electrode, or mutual interference between the light-shielding layer and the source electrode, but not limited thereto) caused by the two adjacent light-shielding layers being connected together.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be combined, modified, or some or all of the technical features may be equivalently replaced; such combination, modification or substitution does not make the essence of the corresponding technical solution depart from the scope of the technical solution of the embodiments of the present disclosure.

Claims

1. A display device, comprising:

a substrate;

two adjacent pixels arranged on the substrate and arranged along a first direction; and

two adjacent light shielding layers respectively arranged between the two adjacent pixels and the substrate,

wherein one of the two adjacent pixels comprises a sub-pixel and a low-sensitivity sub-pixel, the two adjacent light shielding layers are separated by a gap region, and the gap region is arranged corresponding to the low-sensitivity sub-pixel.

2. The display device of claim 1, wherein the low-sensitivity sub-pixel is a blue sub-pixel.

3. The display device according to claim 1, wherein the low-sensitivity sub-pixel comprises a transistor driving unit, and the gap region overlaps with the transistor driving unit.

4. A display device as claimed in claim 3, wherein the transistor drive unit comprises a U-shaped active region, the gap region overlapping one of the limbs of the U-shaped active region and not overlapping the other limb of the U-shaped active region.

5. The display device according to claim 1, wherein one of the two adjacent light-shielding layers overlaps the sub-pixel along the first direction.

6. The display device of claim 1, wherein the low-sensitivity sub-pixel overlaps the gap region.

7. The display device according to claim 1, wherein a length of one of the two adjacent light-shielding layers along the first direction is greater than five times a length of the low-sensitivity sub-pixel along the first direction.

8. The display device according to claim 1, further comprising:

two other adjacent pixels arranged on the substrate and arranged along the first direction; and

and the two other adjacent light shielding layers are respectively arranged between the two other adjacent pixels and the substrate, wherein the two adjacent pixels and the two other adjacent pixels are arranged along a second direction, the second direction is different from the first direction, the two other adjacent light shielding layers are separated by another gap area, and the gap area is arranged corresponding to the other gap area in the second direction.

9. The display device according to claim 1, further comprising:

and the other two adjacent light shielding layers are respectively arranged between the other two adjacent pixels and the substrate, wherein the two adjacent pixels and the other two adjacent pixels are arranged along a second direction, the second direction is different from the first direction, the other two adjacent light shielding layers are separated by another gap area, and the gap areas and the other gap areas are arranged in a staggered manner in the second direction.

10. The display device according to claim 1, wherein the light-shielding layer has a thickness of 500 to 3000 angstroms.