A display device

Abstract

A display device comprises a display substrate (1) having a display area (AA) and a frame area (BB) located at the periphery of the display area (AA); an ambient light detection component (11) integrated in the frame area (BB) of the display substrate (1); and a light shielding portion (4) located on the display side of the display substrate (1), the light shielding portion (4) covering the ambient light detection component (11) in the orthographic projection of the display substrate (1) to shield light reflected by the ambient light detection component (11).

Description

Technical Field

[0001] This disclosure relates to the field of semiconductor technology, and more particularly to a display device. Background Technology

[0002] Currently, LCD product design is constantly pursuing narrow bezels, but due to the limitations of display product functional module requirements, it is impossible to directly cancel a certain function, resulting in the bezels not being able to be further narrowed. Summary of the Invention

[0003] This disclosure provides a display device, comprising:

[0004] The display substrate has a display area and a border area located around the display area;

[0005] An ambient light detection component is integrated into the frame area of ​​the display substrate;

[0006] A light-shielding part is located on the display side of the display substrate. The light-shielding part covers the ambient light detection component on the orthographic projection of the display substrate to block the light reflected by the ambient light detection component.

[0007] In one possible implementation, the display device includes a cover plate located on the display side of the display substrate, and a counter substrate located between the cover plate and the display substrate, wherein the cover plate has ink in an area corresponding to the frame area, and the counter substrate has a black matrix.

[0008] The light-shielding part is disposed on the cover plate, and the orthographic projection of the light-shielding part on the display substrate and the orthographic projection of the ink on the display substrate do not overlap. The black matrix has a first hollow part in the area corresponding to the light-shielding part.

[0009] Alternatively, the light-shielding portion is disposed on the opposing substrate, and the orthographic projection of the light-shielding portion on the display substrate and the orthographic projection of the black matrix on the display substrate do not overlap, and the ink has a second cutout portion in the area corresponding to the light-shielding portion.

[0010] In one possible implementation, the light-shielding portion is disposed on the cover plate, and the light transmittance of the light-shielding portion is higher than that of the ink.

[0011] In one possible implementation, the light-shielding part and the ink have the same composition, both containing epoxy resin, and the mass proportion of epoxy resin in the light-shielding part is higher than the mass proportion of epoxy resin in the ink.

[0012] In one possible implementation, the light transmittance of the light-shielding portion is 50% to 70%.

[0013] In one possible implementation, the frame area where the ambient light detection component is located is a first frame area; the width of the light-shielding part in the direction perpendicular to the extension of the first frame area is 0.3mm to 0.9mm.

[0014] In one possible implementation, the light-shielding portion has a first boundary facing the display area, the display area has a second boundary facing the first border area, and the distance between the first boundary and the second boundary is greater than or equal to zero and less than 0.18 mm.

[0015] In one possible implementation, the ambient light detection component includes 400 to 600 first transistors.

[0016] In one possible implementation, the gate of the first transistor is connected to the same first gate line, the first electrode of the first transistor is connected to the same data line, and the second electrode of the first transistor is connected to the same first signal readout line.

[0017] In one possible implementation, the display device further includes a contrast detection component integrated into the bezel area of ​​the display substrate;

[0018] The orthographic projection of the black matrix onto the display substrate covers the orthographic projection of the contrast detection component onto the display substrate.

[0019] In one possible implementation, the contrast detection component includes a plurality of second transistors, the number of which is the same as the number of the first transistors included in the ambient light detection component.

[0020] In one possible implementation, the gate of the second transistor is connected to the same second gate line, the first terminal of the second transistor is connected to the same data line, and the second terminal of the second transistor is connected to the same second signal readout line.

[0021] In one possible implementation, a plurality of the first transistors and a plurality of the second transistors are arranged in a row;

[0022] Both the first transistor and the second transistor include an active layer, and the active layer includes a channel region;

[0023] The first transistor and the second transistor also include a gate located on the side of the active layer opposite to the cover plate, and the orthogonal projection of the gate on the display substrate covers the orthogonal projection of the channel region on the display substrate. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of a cross-section parallel to the dashed line CC;

[0026] Figure 3 for Figure 1 A schematic diagram of a cross-section parallel to the dashed line EE;

[0027] Figure 4 A cross-sectional schematic diagram of another display device provided in an embodiment of the present invention;

[0028] Figure 5 This is an enlarged structural view of the cover plate in the area corresponding to the ambient light detection component.

[0029] Figure 6 This is an enlarged structural view of the display substrate in the area corresponding to the ambient light detection component;

[0030] Figure 7 This is a schematic diagram showing the correspondence between the ambient light detection component and the first ink section provided in an embodiment of the present invention;

[0031] Figure 8 This is a cross-sectional structural diagram of a display device provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the first transistor and the second transistor provided in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0035] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0036] The top bezel of the display product needs to accommodate an ambient light sensor, and the top of the cover plate needs to simultaneously reserve an area for an infrared (IR) aperture screen, limiting the narrowing of the top bezel. To further shorten the module bezel and reduce costs, it is proposed to integrate the ambient light adjustment function of the entire device into the module product. This utilizes the photosensitive characteristics of thin-film transistor (TFT) devices to detect ambient light, eliminating the need for the reserved ambient light module area on the top of the device, thus shortening the bezel and reducing costs. However, due to the reflective properties of the metal layer of the TFT device, a bright line caused by the reflection of the metal layer will be visible in a dark screen.

[0037] In view of this, combined with Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, where, Figure 2 for Figure 1 A schematic diagram of the cross-section along the dashed line CC. Figure 3 for Figure 1 A cross-sectional schematic diagram along the dashed line EE shows an embodiment of a display device, comprising:

[0038] Display substrate 1 has a display area AA and a border area BB located around the display area AA;

[0039] Ambient light detection component 11 is integrated into the bezel area BB of the display substrate 1;

[0040] The light-shielding part 4 is located on the display side of the display substrate 1. The light-shielding part 4 covers the ambient light detection member 13 on the orthogonal projection of the display substrate 1 to block the light reflected by the ambient light detection member.

[0041] In this embodiment, the ambient light detection component 11 is integrated into the frame area BB of the display substrate 1. The light-shielding part 4 is located on the display side of the display substrate 1. The light-shielding part 4 covers the ambient light detection component 13 on the orthographic projection of the display substrate 1 to block the light reflected by the ambient light detection component. This can achieve a narrow frame while blocking part of the light reflected by the ambient light detection component 11 in the frame area BB. This allows the ambient light detection component 11 to perform light detection while avoiding the problem of bright lines generated by the ambient light detection component 11 due to the reflection of ambient light.

[0042] In specific implementation, combined with Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the display device includes a cover plate 2 located on the display side of the display substrate 1, and a counter substrate 3 located between the cover plate 2 and the display substrate 1. The cover plate 2 has ink 21 in the area corresponding to the frame area BB, and the counter substrate 3 has a black matrix 31.

[0043] The light-shielding part 4 can be disposed on the cover plate 2. The orthographic projection of the light-shielding part 4 on the display substrate 1 and the orthographic projection of the ink 21 on the display substrate 1 do not overlap (they may overlap in other embodiments). The black matrix 31 has a first cutout part 310 in the area corresponding to the light-shielding part 4. Specifically, the orthographic projection of the light-shielding part 4 on the display substrate 1 can cover the orthographic projection of the ambient light detection component 11 on the display substrate 1, and the orthographic projection of the light-shielding part 4 on the display substrate 1 can cover the orthographic projection of the first cutout part 310 on the display substrate 1. Specifically, the orthographic projection of the light-shielding part 4 on the display substrate 1 can also coincide with the orthographic projection of the ambient light detection component 11 on the display substrate 1, and the orthographic projection of the light-shielding part 4 on the display substrate 1 can also coincide with the orthographic projection of the first cutout part 310 on the display substrate 1.

[0044] Alternatively, the light-shielding part 4 can also be provided on the opposing substrate 3, such as... Figure 4As shown, the orthographic projection of the light-shielding part 4 on the display substrate 1 and the orthographic projection of the black matrix 31 on the display substrate 1 do not overlap (they may overlap in other embodiments). The ink 21 has a second cutout 210 in the area corresponding to the light-shielding part 4. Specifically, the orthographic projection of the light-shielding part 4 on the display substrate 1 can cover the orthographic projection of the ambient light detection component 11 on the display substrate 1, and the orthographic projection of the light-shielding part 4 on the display substrate 1 can cover the orthographic projection of the second cutout 210 on the display substrate 1. Specifically, the orthographic projection of the light-shielding part 4 on the display substrate 1 can also coincide with the orthographic projection of the ambient light detection component 11 on the display substrate 1, and the orthographic projection of the light-shielding part 4 on the display substrate 1 can also coincide with the orthographic projection of the second cutout 210 on the display substrate 1.

[0045] In practical implementation, the opposing substrate can be a color filter substrate, and the display substrate can be an array substrate.

[0046] In specific implementation, the light-shielding part 4 can be disposed on the cover plate 2, specifically on the side of the cover plate 2 facing the display substrate 1, and the light transmittance of the light-shielding part 4 is higher than that of the ink 21. Alternatively, the light-shielding part 4 can be disposed on the side of the opposing substrate 3 facing the display substrate 1, on the same side of the opposing substrate 3 as the black matrix 31, and the light transmittance of the light-shielding part 4 is higher than that of the black matrix 31. Furthermore, the light-shielding part 4 can also be a black matrix, but the light transmittance of the black matrix forming the light-shielding part 4 must be higher than that of a conventional black matrix. Figure 4 The black matrix 31 can be a conventional black matrix. Specifically, the black matrix 31 and the light-shielding part 4 can be formed through two patterning processes.

[0047] Specifically, the light-shielding part 4 and the ink 21 can have the same composition; that is, the light-shielding part 4 can also be a type of ink, but the light transmittance of this ink must be higher than that of conventional inks. Ink 32 can be a conventional ink. Both the light-shielding part 4 and the ink 21 contain epoxy resin, and the mass proportion of epoxy resin in the light-shielding part 4 is higher than that in the ink 21. For example, the mass proportion of epoxy resin in the ink 21 is 8% to 19%, and the mass proportion of epoxy resin in the light-shielding part 4 is 40% to 70%.

[0048] In one possible implementation, the light transmittance of the light-shielding part 4 is 50 to 70 times that of the light transmittance of the ink 21.

[0049] In one possible implementation, the light transmittance of the light-shielding part 4 is 50% to 70%. Specifically, the light transmittance of the light-shielding part 4 is 60%. Specifically, the light transmittance of the light-shielding part 4 can be understood as the transmittance of visible light, for example, the transmittance of light at 550 nm.

[0050] In one possible implementation, combined with Figure 2As shown, ink 21 is located on the side of cover plate 2 facing display substrate 1.

[0051] In one possible implementation, when the light-shielding part 4 is disposed on the cover plate 2, combined with Figure 1 and Figure 5 As shown, where, Figure 5 for Figure 1 In the enlarged structural diagram corresponding to the location of the ambient light detection component 11, the frame area BB where the ambient light detection component 11 is located is the first frame area BB1; the width d1 of the light-shielding part 4 in the direction DD perpendicular to the first frame area BB1 is 0.3mm to 0.9mm. Specifically, the width d1 of the light-shielding part 4 in the direction DD perpendicular to the first frame area BB1 is 0.3mm to 0.5mm. Specifically, the width d1 of the light-shielding part 4 in the direction DD perpendicular to the first frame area BB1 is 0.4mm. In this embodiment of the present disclosure, the width d1 of the light-shielding part 4 in the direction DD perpendicular to the first frame area BB1 is 0.3mm to 0.9mm, which can achieve complete coverage of the area where the ambient light detection component 11 is located.

[0052] In one possible implementation, combined with Figure 5 , Figure 6 , Figure 7 As shown, the light-shielding part 4 has a first boundary b facing the display area AA, and the display area AA has a second boundary a facing the first border area BB1. The distance d2 between the first boundary b and the second boundary a is greater than or equal to zero and less than 0.18 mm. Specifically, the distance d2 between the first boundary b and the second boundary a is greater than or equal to zero and less than 0.17 mm. In a specific implementation, the light-shielding part 4 can be formed by screen printing. Since the positioning tolerance of the ink screen printing equipment is ±0.08, the width tolerance of the light-shielding part 4 with 60% light transmittance is ±0.08, and the bonding tolerance between the display panel (including the display substrate and the opposing substrate) and the cover plate is ±0.1, the distance between the lower side of the area where the ambient light detection component 11 is located (that is, the lower boundary of the groove 110 where the ambient light detection component 11 is located) and the lower boundary of the light-shielding part 4 is calculated by accumulating tolerances. At a distance of 60%, an ink area with 60% transmittance is needed to completely cover the ambient light. Specifically, the light-blocking portion 4 with 60% transmittance needs to cover the ambient light by 0.13mm on all sides to completely cover the ambient light detection component 11. For example, combined with... Figure 5 , Figure 6 and Figure 7 As shown, where, Figure 6 An enlarged structural diagram of the ambient light detection component 11 provided on the display substrate. Figure 7The diagram shows a partially enlarged view including the ambient light detection component 11 and the light-shielding part 4. The distance d3 between the lower side of the area where the ambient light detection component 11 is located (i.e., the lower boundary of the groove 110 where the ambient light detection component 11 is located) and the upper boundary a of the display area AA is 301 μm (i.e., 0.301 mm). If 60% of the area where the ambient light detection component 11 is located is covered by the light-shielding part 4, the distance d4 between the lower boundary of the 60% transmittance light-shielding part 4 and the lower boundary of the groove 110 is 0.13 mm (i.e., the 60% transmittance light-shielding part 4 needs to cover the ambient light by 0.13 mm in all directions to completely cover the ambient light detection component 11). Therefore, the distance d2 between the lower boundary of the 60% transmittance light-shielding part 4 and the upper boundary a of the display area AA is 0.17 mm. Of course, due to fluctuations in actual manufacturing processes, the light-shielding part 4 may completely cover the area between the lower boundary of the groove 110 and the upper boundary a of the display area AA; that is, d2 may also be equal to 0.

[0053] In one possible implementation, the ambient light detection component 11 includes 400 to 600 first transistors. In this embodiment, the ambient light detection component 11 including 400 to 600 first transistors can improve the problem of weak detected signals caused by partial blocking of incident light when a light-shielding portion 4 is provided in the corresponding area of ​​the ambient light detection component 11. That is, it avoids the problem of weak detected signals caused by brightness loss due to the 60% transmittance of the light-shielding portion 4.

[0054] In one possible implementation, combined with Figure 8 As shown, the gate of the first transistor T1 is connected to the same first gate line G1, the first electrode of the first transistor T1 is connected to the same data line S, and the second electrode of the first transistor T1 is connected to the same first signal readout line I1.

[0055] In one possible implementation, combined with Figure 1 , Figure 3 and Figure 4 As shown, the display device further includes a contrast detection component 12 integrated into the bezel area BB of the display substrate; the orthographic projection of the black matrix layer 31 onto the display substrate 1 covers the orthographic projection of the contrast detection component 12 onto the display substrate 1. In this embodiment of the present disclosure, the display device further includes a contrast detection component 12 integrated into the bezel area BB of the display substrate, which can obtain changes in ambient light by comparing the signal detected by the ambient light detection component 11 with the signal detected by the contrast detection device 12, thereby improving the accuracy of ambient light detection.

[0056] In one possible implementation, combined with Figure 8 As shown, the comparison detection component 12 includes a plurality of second transistors T2, and the number of second transistors T2 included in the comparison detection component 12 is the same as the number of first transistors T1 included in the ambient light detection component 11. It should be noted that... Figure 8 This illustration is based on the example of ambient light detection component 11 including 3 first transistors T1 and comparison detection component 12 including 3 second transistors T2. The embodiments disclosed herein are not limited thereto.

[0057] In one possible implementation, the gate of the second transistor T2 is connected to the same second gate line G2, the first terminal of the second transistor T2 is connected to the same data line S, and the second terminal of the second transistor T2 is connected to the same second signal readout line I2.

[0058] In practical implementation, considering the impedance difference between the first transistor T1 and the second transistor T2 caused by the process, both the first transistor T1 and the second transistor T2 are connected in parallel to reduce individual differences.

[0059] In one possible implementation, combined with Figure 8 As shown, multiple first transistors T1 and multiple second transistors T2 are arranged in a row.

[0060] In one possible implementation, see Figure 9 As shown, both the first transistor T1 and the second transistor T2 include an active layer 104 located on one side of the substrate 100. Specifically, the active layer 104 can be a photosensitive layer that generates photogenerated carriers when irradiated by light.

[0061] In one possible implementation, the active layer 104 includes a channel region 1041; the first transistor T1 and the second transistor T2 each include a gate 102 located on the side of the active layer 104 opposite to the cover plate 2, and the orthographic projection of the gate 102 on the display substrate 1 covers the orthographic projection of the channel region 1041 on the display substrate 1. In this embodiment of the present disclosure, the orthographic projection of the gate 102 on the display substrate 1 covers the orthographic projection of the channel region 1041 on the display substrate 1, which can mitigate the impact of backlight emission on the ambient light detection component 11 and the light detection of the contrast detection device 12.

[0062] In specific implementation, combined with Figure 9 As shown, both the first transistor T1 and the second transistor T2 include a first electrode layer 101 (the material of the first electrode layer 101 can be indium tin oxide) located between the gate 102 and the substrate 100. A gate insulating layer 103 can also be disposed between the gate 102 and the active layer 104. A data signal line 105 (which can be used as a data line S) and a drain 106 can also be disposed on the side of the active layer 104 away from the gate insulating layer 103. A passivation layer 107 can also be disposed on the side of the data signal line 105 away from the active layer 104. A second electrode layer 108 (the material of the second electrode layer 108 can be indium tin oxide) can also be disposed on the side of the passivation layer 107 away from the data signal line 105.

[0063] In specific implementations, the display substrate provided in this embodiment can be an array substrate. Specifically, the display device may also have a backlight module disposed on the side of the display substrate 1 away from the cover plate 2.

[0064] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0065] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A display device, wherein, include: The display substrate has a display area and a border area located around the display area; An ambient light detection component is integrated into the frame area of ​​the display substrate; A light-shielding part is located on the display side of the display substrate. The light-shielding part covers the ambient light detection component on the orthographic projection of the display substrate to block the light reflected by the ambient light detection component. The light-shielding part is formed by screen printing process. The frame area where the ambient light detection component is located is the first frame area; The width of the light-shielding portion in the direction perpendicular to the first frame area is 0.3mm to 0.9mm; the light-shielding portion has a first boundary facing the display area, the display area has a second boundary facing the first frame area, and the distance between the first boundary and the second boundary is greater than or equal to zero and less than 0.18mm; The ambient light detection component includes 400 to 600 first transistors; the gates of the first transistors are connected to the same first gate line, the first terminals of the first transistors are connected to the same data line, and the second terminals of the first transistors are connected to the same first signal readout line.

2. The display device as claimed in claim 1, wherein, The display device includes a cover plate located on the display side of the display substrate, and a counter substrate located between the cover plate and the display substrate. The cover plate has ink in the area corresponding to the frame area, and the counter substrate has a black matrix. The light-shielding part is disposed on the cover plate, and the black matrix has a first hollow part in the area corresponding to the light-shielding part; Alternatively, the light-shielding portion is disposed on the opposing substrate, and the ink has a second perforation portion in the area corresponding to the light-shielding portion.

3. The display device as claimed in claim 2, wherein, The light-shielding part is disposed on the cover plate, and the light transmittance of the light-shielding part is higher than that of the ink.

4. The display device as claimed in claim 3, wherein, The light-shielding part and the ink have the same composition, both containing epoxy resin, and the mass proportion of epoxy resin in the light-shielding part is higher than the mass proportion of epoxy resin in the ink.

5. The display device as claimed in claim 4, wherein, The light transmittance of the light-shielding part is 50% to 70%.

6. The display device as claimed in claim 2, wherein, The display device further includes a contrast detection component integrated into the border area of ​​the display substrate; The orthographic projection of the black matrix onto the display substrate covers the orthographic projection of the contrast detection component onto the display substrate.

7. The display device as claimed in claim 6, wherein, The contrast detection component includes a plurality of second transistors, the number of which is the same as the number of the first transistors included in the ambient light detection component.

8. The display device as claimed in claim 7, wherein, The gate of the second transistor is connected to the same second gate line, the first terminal of the second transistor is connected to the same data line, and the second terminal of the second transistor is connected to the same second signal readout line.

9. The display device as claimed in claim 8, wherein, The first transistor and the second transistor are arranged in a row; Both the first transistor and the second transistor include an active layer, and the active layer includes a channel region; The first transistor and the second transistor also include a gate located on the side of the active layer opposite to the cover plate, and the orthogonal projection of the gate on the display substrate covers the orthogonal projection of the channel region on the display substrate.

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