Display device and its assembly method

Abstract

The display device and assembly method disclosed herein include a display substrate, which includes a display area and a border area surrounding the display area, at least a portion of which serves as a bonding area; the display substrate includes a ground terminal located in the bonding area; a counter substrate, disposed opposite to the display substrate, the orthographic projection of the counter substrate on the display substrate exposing the bonding area, the counter substrate including a black matrix disposed on a side facing the display substrate and an electrostatic shielding layer disposed on a side away from the display substrate, the black matrix including a first opening, the orthographic projection of the first opening on the display substrate being located within the border area on the side where the bonding area is located, the first opening interrupting the black matrix in a first direction, the first direction intersecting with the direction from the display area to the bonding area; and conductive adhesive connecting the ground terminal and the electrostatic shielding layer, the orthographic projection of the conductive adhesive on the display substrate being located within the border area on the side where the bonding area is located, the conductive adhesive contacting the side of the black matrix facing the bonding area and perpendicular to the display substrate.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display device and its assembly method. Background Technology

[0002] In recent years, with industrial upgrading and technological development, traditional white goods have shown a rapid trend of transformation into smart home appliances. The deepening of the concepts of 5G and artificial intelligence of things (AIOT) has provided an opportunity for the development of smart homes. Smart central control is the core of smart home control, so it is foreseeable that the multi-functional development of smart central control will help the rapid development of smart homes, making people's lives more convenient, improving their quality of life, and enriching their experience. Summary of the Invention

[0003] This disclosure provides a display device and its assembly method, the specific solution of which is as follows:

[0004] In one aspect, embodiments of this disclosure provide a display device, including:

[0005] The display substrate includes a display area and a border area surrounding the display area, at least a portion of the border area serving as a bonding area; the display substrate includes a ground terminal located in the bonding area.

[0006] A counter substrate is positioned opposite to the display substrate. The orthographic projection of the counter substrate onto the display substrate exposes the bonding area. The counter substrate includes a black matrix disposed on a side facing the display substrate and an electrostatic shielding layer disposed on a side facing away from the display substrate. The black matrix includes a first opening. The orthographic projection of the first opening onto the display substrate is located within the border area on the side where the bonding area is located. The first opening interrupts the black matrix in a first direction, and the first direction intersects the direction from the display area to the bonding area.

[0007] The conductive adhesive connects the grounding terminal and the electrostatic shielding layer. The orthographic projection of the conductive adhesive on the display substrate is located within the frame area on the side where the bonding area is located. The conductive adhesive is in contact with the side of the black matrix facing the bonding area and perpendicular to the display substrate.

[0008] In some embodiments, the display device provided in this disclosure further includes: a light-shielding adhesive located on the side of the display substrate away from the opposing substrate, and a light strip located on the side of the light-shielding adhesive away from the display substrate, wherein the orthographic projection of the light-shielding adhesive on the display substrate surrounds the display area, and the orthographic projection of the light strip on the display substrate is located within the border area on the side where the bonding area is located;

[0009] The minimum preset distance between the orthographic projection of the first opening on the display substrate and the orthographic projection of the light-shielding adhesive on the display substrate is 'a'. The manufacturing tolerance of the light-shielding adhesive is '△1'. The assembly tolerance of the light-shielding adhesive is '△2'. The manufacturing tolerance of the first opening is '△3'. The assembly tolerance of the display substrate and the opposing substrate is '△4'. In the direction perpendicular to the display substrate, the maximum distance between the surface of the light-shielding adhesive facing the display substrate and the surface of the display substrate facing the opposing substrate is 'b'. The critical angle at which the emitted light from the lamp strip undergoes total internal reflection on the surface of the display substrate facing the opposing substrate is 'θ'.

[0010] In some embodiments, in the display device provided in the present disclosure, at a certain position away from the conductive adhesive, the first opening includes a first sub-opening, the first sub-opening being arc-shaped, and the arc of the first sub-opening being greater than or equal to 90° and less than or equal to 94°.

[0011] In some embodiments, in the display device provided in the present disclosure, the first opening further includes a second sub-opening and a third sub-opening extending along the first direction, the first sub-opening connecting the second sub-opening and the third sub-opening; in the second direction, the distance between the orthographic projection of the second sub-opening on the display substrate and the display area is greater than the distance between the orthographic projection of the third sub-opening on the display substrate and the display area, the second direction being the direction from the display area to the bonding area.

[0012] In some embodiments, in the display device provided in the present disclosure, the black matrix further includes a second opening, the orthographic projection of the second opening on the display substrate surrounding the display area.

[0013] In some embodiments, in the display device provided in the present disclosure, the orthographic projection of the second opening on the display substrate is located within the orthographic projection of the light-shielding adhesive on the display substrate.

[0014] In some embodiments, in the display device provided in the present disclosure, the angle between the shortest line connecting the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate and the first direction is α, and the angle between the shortest line connecting the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate and the first direction is β, where α > β.

[0015] In some embodiments, in the display device provided in the present disclosure, α = arctan(n / m), β = arctan(f / e), where m is the distance between the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the first direction, n is the distance between the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the second direction, e is the distance between the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the first direction, and f is the distance between the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the second direction.

[0016] In some embodiments, in the display device provided in this disclosure, the width of the first opening is the same as the width of the second opening.

[0017] The second opening is located on the side away from the display area, and the boundary extension line in the second direction is located on the side of the second sub-opening facing the first sub-opening. The distance between the boundary extension line of the second opening on the side away from the display area and the end face of the first sub-opening adjacent to the second sub-opening is less than or equal to 52 μm.

[0018] In some embodiments, the display device provided in this disclosure further includes a support structure located between the light-shielding adhesive and the display substrate, wherein the orthographic projection of the support structure on the display substrate is located within the orthographic projection of the light-shielding adhesive on the display substrate.

[0019] In some embodiments, the display device provided in the present disclosure further includes: a frame, the frame including a frame body and a plurality of first protrusions, the frame body forming an accommodating space, the orthographic projection of the accommodating space on the display substrate being larger than the display area and partially overlapping with the border area, the orthographic projection of the plurality of first protrusions on the display substrate being located in the border area on the side where the bonding area is located, the plurality of first protrusions extending toward the accommodating space, and the plurality of first protrusions being arranged side by side along the first direction;

[0020] The light strip includes a plurality of LED beads arranged sequentially in the first direction, and the LED beads are disposed in the grooves between each of the first protrusions.

[0021] In some embodiments, in the display device provided in the present disclosure, the plurality of first protrusions include a plurality of first sub-protrusions and a plurality of second sub-protrusions, wherein the first sub-protrusions and the second sub-protrusions are alternately arranged in the first direction;

[0022] The size of the LED bead in the second direction is greater than the size of the second sub-protrusion in the second direction and less than the size of the first sub-protrusion in the second direction, where the second direction is the direction from the display area to the binding area.

[0023] In some embodiments, in the display device provided in the present disclosure, the ratio of the size of the first sub-protrusion in the second direction to the size of the second sub-protrusion in the second direction is greater than 1 and less than or equal to 2.

[0024] In some embodiments, in the display device provided in the present disclosure, the distance between the light-emitting surface of the lamp bead and the display area in the second direction is g, the distance between the first sub-protrusion and the second sub-protrusion in the first direction is h, g / h > 0.7, and the second direction is the direction from the display area to the bonding area.

[0025] In some embodiments, the display device provided in this disclosure further includes: a reflective sheet located within the accommodating space, the reflective sheet including a reflective sheet body and a plurality of second protrusions located on the side of the reflective sheet body near the lamp bead;

[0026] The orthographic projection of the LED on the display substrate is located within the orthographic projection of the second protrusion on the display substrate, and the first protrusion is disposed in the groove of each of the second protrusions.

[0027] In some embodiments, in the display device provided in the present disclosure, there is a gap between the surface of the lamp bead away from the display substrate and the surface of the reflector facing the display substrate.

[0028] In some embodiments, in the display device provided in the present disclosure, the reflective sheet includes a reflective surface and a first anti-foolproof structure, the reflective surface faces the display substrate, and the relative position of the first anti-foolproof structure and the center of the reflective surface is fixed.

[0029] In some embodiments, the display device provided in this disclosure further includes a light guide plate located within the accommodating space on the side of the reflective sheet facing the display substrate, wherein the orthographic projection of the light guide plate on the display substrate is substantially coincident with the orthographic projection of the reflective sheet body on the display substrate;

[0030] The LED bead is located on the side of the light guide plate facing the bonding area, and the distance between the light-emitting surface of the LED bead and the light guide plate is less than or equal to 0.1 mm.

[0031] In some embodiments, in the display device provided in the present disclosure, the light guide plate includes a light emitting surface and a second foolproof structure, the light emitting surface facing the display substrate, and the relative position of the second foolproof structure and the center of the light emitting surface is fixed.

[0032] In some embodiments, in the display device provided in the present disclosure, the light strip further includes a backlight flexible circuit board, which is electrically connected to the plurality of lamp beads;

[0033] The display device further includes a main flexible circuit board, which includes a first adsorption area for flattening the main flexible circuit board during the process of bonding the main flexible circuit board to the display substrate and the backlight flexible circuit board.

[0034] In some embodiments, in the display device provided in the present disclosure, the main flexible circuit board further includes a QR code, which contains material number information and production date.

[0035] In some embodiments, the display device provided in this disclosure further includes a touch panel located on the side of the opposing substrate away from the display substrate, and a touch flexible circuit board electrically connected to the touch panel; the touch flexible circuit board includes a second adsorption area, which is used to flatten the touch flexible circuit board during the process of binding the touch flexible circuit board to the touch panel.

[0036] In some embodiments, in the display device provided in the present disclosure, the touch flexible circuit board further includes a touch chip and a reinforcing plate. The reinforcing plate is located on one side of the touch flexible circuit board, and the side where the reinforcing plate is located is opposite to the side where the touch chip is located. The area where the reinforcing plate is located coincides with the area where the touch chip is located.

[0037] On the other hand, embodiments of this disclosure provide a method for assembling a display device, including:

[0038] The touch panel is fixed to the light-emitting side of the display panel, which includes a display substrate and a counter substrate placed opposite each other.

[0039] The main flexible circuit board is bonded to the display substrate, the touch flexible circuit board is bonded to the touch panel, and the light guide assembly is fixed to the light strip. The light guide assembly includes a frame, a reflective sheet, a light guide plate, a diffuser sheet, and a prism.

[0040] The center point of the display panel and the center point of the light guide component are obtained, and the center point of the display panel is controlled to coincide with the center point of the light guide component to achieve the alignment of the display panel and the light guide component;

[0041] The backlight flexible circuit board of the light strip is welded and fixed to the main flexible circuit board;

[0042] A pad tape is attached to the main flexible circuit board, and the pad tape covers at least the area where the light-emitting control pads of the main flexible circuit board are located and the area where the display chip is located.

[0043] An easy-tear sticker is affixed to the side of the display panel away from the touch panel. Attached Figure Description

[0044] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of this disclosure;

[0045] Figure 2 For along Figure 1 Cross-sectional view of line I-I' in the middle;

[0046] Figure 3 This is another schematic diagram of the structure of the display device provided in the embodiments of this disclosure;

[0047] Figure 4 for Figure 3 A magnified structural diagram of region V1 is shown below;

[0048] Figure 5 This is a cross-sectional structural diagram of the display device in the bezel area provided in an embodiment of the present disclosure;

[0049] Figure 6 This is a schematic diagram of the structure of the light-shielding adhesive and light strip provided in the embodiments of this disclosure;

[0050] Figure 7 This is a schematic diagram of the structure of the light strip provided in an embodiment of the present disclosure;

[0051] Figure 8 A schematic diagram of the structure of the frame, LED, reflector, and backplate provided in the embodiments of this disclosure;

[0052] Figure 9 This is a schematic diagram of the structure of the adhesive frame provided in an embodiment of this disclosure;

[0053] Figure 10 This is a schematic diagram of the structure of the light guide assembly provided in the embodiments of this disclosure;

[0054] Figure 11 This is a schematic diagram of the structure of the reflector provided in an embodiment of the present disclosure;

[0055] Figure 12 for Figure 11 A magnified structural diagram of the V2 region;

[0056] Figure 13This is a schematic diagram of the structure of the light guide plate provided in an embodiment of this disclosure;

[0057] Figure 14 for Figure 13 A magnified structural diagram of the V3 region;

[0058] Figure 15 This is a schematic diagram of the structure of the diffusion sheet and black adhesive provided in the embodiments of this disclosure;

[0059] Figure 16 This is a schematic diagram of the structure of a prism provided in an embodiment of the present disclosure;

[0060] Figure 17 This is another schematic diagram of the structure of the display device provided in the embodiments of this disclosure;

[0061] Figure 18 This is another schematic diagram of the structure of the display device provided in the embodiments of this disclosure;

[0062] Figure 19 This is a schematic diagram of the structure of a touch panel provided in an embodiment of this disclosure;

[0063] Figure 20 This is a schematic diagram illustrating a self-capacitance principle when no touch occurs, provided in an embodiment of this disclosure.

[0064] Figure 21 This is a schematic diagram illustrating a self-mutual capacitance principle during touch operation, provided in an embodiment of this disclosure.

[0065] Figure 22 A schematic diagram illustrating another self-capacitance principle when no touch occurs, provided in an embodiment of this disclosure;

[0066] Figure 23 A schematic diagram illustrating another self-capacitance principle during touch operation provided in an embodiment of this disclosure;

[0067] Figure 24 This is a touch timing diagram provided for an embodiment of the present disclosure;

[0068] Figure 25 This is a schematic diagram of the structure of the easy-tear adhesive provided in an embodiment of this disclosure;

[0069] Figure 26 For along Figure 25 Schematic diagram of the cross-sectional structure of line II-II'. Detailed Implementation

[0070] 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. It should be noted that the dimensions and shapes of the figures in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0071] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as 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 and the claims 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 “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0072] As used herein, “about” or “approximately” includes the stated value and means within an acceptable range of deviation from the specific value, as determined by a person skilled in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “about” may mean a difference relative to the stated value within one or more standard deviations, or within ±30%, 20%, 10%, or 5%.

[0073] The display device in the related technology includes a display substrate and a counter substrate placed opposite each other. Usually, an electrostatic shielding layer is made on the side of the counter substrate away from the display substrate, and the electrostatic shielding layer is electrically connected to the grounding terminal of the display substrate by silver paste. The electrostatic paste releases the static electricity introduced into the electrostatic shielding layer by external charged objects such as cutting tools and human bodies to the grounding terminal, thereby achieving the purpose of shielding the external electric field.

[0074] To prevent light leakage around the display area, related technologies extend the black matrix in the opposing substrate from the display area to cover the bezel area surrounding the display area. However, this approach causes the black matrix to come into contact with the silver paste, resulting in the black matrix becoming charged. This charging of the black matrix can adversely affect the deflection of the liquid crystal in the display device, causing abnormal display and impacting display quality.

[0075] To at least improve the aforementioned technical problems existing in related technologies, embodiments of this disclosure provide a display device, such as... Figure 1 and Figure 2 As shown, it includes:

[0076] Display substrate 001 includes a display area AA and a border area BB surrounding the display area AA, at least a portion of the border area BB serving as a bonding area BD; display substrate 001 includes a ground terminal 101 located in the bonding area BB.

[0077] The opposing substrate 002 is positioned opposite the display substrate 001. The orthographic projection of the opposing substrate 002 onto the display substrate 001 exposes the bonding area BD. The opposing substrate 002 includes a black matrix 201 disposed on the side facing the display substrate 001 and an electrostatic shielding layer 202 disposed on the side facing away from the display substrate 001. The black matrix 201 includes a first opening K1. The orthographic projection of the first opening K1 onto the display substrate 001 is located within the border area BB on the side where the bonding area BD is located. The first opening K1 breaks the black matrix 201 in the first direction X. The first direction K1 intersects with the direction from the display area AA to the bonding area BD (i.e., the second direction Y shown in the figure). Optionally, the width of the first opening K1 can be 20 μm. Optionally, the black matrix 201 has a mesh structure within the display area AA, and red color resist R, green color resist G, blue color resist B, etc. can be disposed at each mesh.

[0078] Conductive adhesive 003 connects grounding terminal 101 and electrostatic shielding layer 202. The orthographic projection of conductive adhesive 003 on display substrate 001 is located in the frame area BB on the side where bonding area BD is located. Conductive adhesive 003 and black matrix 201 are in contact with the side facing bonding area BD and perpendicular to display substrate 001. Optionally, conductive adhesive 003 includes conductive particles such as silver (Ag).

[0079] In the display device provided in the embodiments of this disclosure, both the conductive adhesive 003 and the first opening K1 are located within the frame area BB on the side where the bonding area BD is located. Since the first opening K1 can disconnect the black matrix 201 along the first direction X, which intersects the direction from the display area AA to the bonding area BD (i.e., the second direction Y shown in the figure), the static electricity on the conductive adhesive 003 can only be transmitted to the black matrix 201 on the side of the first opening K1 away from the display area AA, and will not be transmitted to the black matrix 201 on the side of the first opening K1 close to the display area AA. This avoids the static electricity on the conductive adhesive 003 being transmitted to the display area AA and affecting the display. Therefore, this disclosure can effectively improve the display quality.

[0080] In some embodiments, in the display device provided in the present disclosure, such as Figures 3 to 7As shown, it may further include: a light-shielding adhesive 004 located on the side of the display substrate 001 away from the opposing substrate 002, and a light strip 005 located on the side of the light-shielding adhesive 004 away from the display substrate 001. The orthographic projection of the light-shielding adhesive 004 on the display substrate 001 surrounds the display area AA, and the orthographic projection of the light strip 005 on the display substrate 001 is located within the border area BB on the side where the bonding area BD is located. The minimum preset distance between the orthographic projection of the first opening K1 on the display substrate 001 and the orthographic projection of the light-shielding adhesive 004 on the display substrate 001 is a, and the light-shielding... The manufacturing tolerance of adhesive 004 is △1, the assembly tolerance of light-shielding adhesive 004 is △2, the manufacturing tolerance of the first opening K1 is △3, the assembly tolerance of display substrate 001 and opposing substrate 002 is △4, the maximum distance between the surface of light-shielding adhesive 004 facing display substrate 001 and the surface of display substrate 001 facing opposing substrate 002 in the direction Z perpendicular to display substrate 001 is b, and the critical angle for total internal reflection of the emitted light from lamp strip 005 on the surface of display substrate 001 facing opposing substrate 002 is θ. This causes the emitted light from the light strip 005 to undergo total internal reflection on the surface of the display substrate 001 facing the substrate 002, thus preventing it from illuminating the first opening K1 and effectively avoiding light leakage at the first opening K1 to form a bright line.

[0081] In some embodiments, the critical angle θ for total internal reflection of the emitted light from the light strip 005 on the surface of the display substrate 001 facing the opposing substrate 002 is equal to arcsin(n1 / n2), where n1 is the refractive index of the film layer closest to the display substrate 001 and the opposing substrate 002, and n2 is the refractive index of air. For example, the critical angle θ is 42°. The minimum actual distance a' between the orthographic projection of the first opening K1 on the display substrate 001 and the orthographic projection of the light-shielding adhesive 004 on the display substrate 001 (equivalent to...) The distance is approximately 0.48 mm. In the direction Z perpendicular to the display substrate 001, the maximum distance b between the surface of the light-shielding adhesive 004 facing the display substrate 001 and the surface of the display substrate 001 facing the opposing substrate 002 is 0.51 mm. The reflection angle of the emitted light from the lamp strip 005 on the surface of the display substrate 001 facing the opposing substrate 002 is arctan(a' / b), which is 44°. It can be seen that the reflection angle of the emitted light from the lamp strip 005 on the surface of the display substrate 001 facing the opposing substrate 002 is 44°, which is greater than the critical angle of total internal reflection of 42°. Therefore, the emitted light from the lamp strip 005 will undergo total internal reflection on the surface of the display substrate 001 facing the opposing substrate 002, thus preventing light leakage at the first opening K1.

[0082] In some embodiments, in the display device provided in the present disclosure, such as Figure 1 , Figure 3 and Figure 4 As shown, at a certain distance from the conductive adhesive 003, the first opening K1 includes a first sub-opening K. 11 The first child to open K 11 Its shape is arc-shaped. The first sub-opening K of the arc shape 11 It can simultaneously block the electrostatic transmission path in all radii of the arc, thus better preventing the adverse effects of electrostatic discharge on the display area (AA). Optionally, the first sub-opening K... 11 The radian γ is greater than or equal to 90° and less than or equal to 94°, for example, 90°, 91°, 92°, 93°, 94°, etc., such that the first sub-opening K 11 The electrostatic transmission path is blocked in all directions from the first direction X to the second direction Y, so as to minimize the adverse effects of electrostatic discharge on the display area AA.

[0083] In some embodiments, in the display device provided in the present disclosure, to improve the effect of blocking static electricity, such as... Figure 1 , Figure 3 and Figure 4 As shown, the first opening K1 also includes a second sub-opening K extending along the first direction X. 12 and the third son open K 13 The first child to open K 11 Connecting the second sub-opening K 12 and the third son open K 13 ; in the second direction Y, the second sub-opening K 12 The distance i between the orthographic projection on the display substrate 001 and the display area AA is greater than the third sub-opening K. 13 The distance j between the orthographic projection on the display substrate 001 and the display area AA, and the second direction Y is the direction from the display area AA to the bonding area BD. Optionally, the first sub-opening K 11 The second child opens K 12 and the third son open K 13 All three have the same width, meaning they can be completely identical or within the range of error caused by factors such as manufacturing and measurement. For example, the first sub-opening K... 11 The second child opens K 12 and the third son open K 13 All three have a width of 20μm.

[0084] In some embodiments, in the display device provided in the present disclosure, such as Figures 1 to 4As shown, the black matrix 201 may further include a second opening K2. The orthographic projection of the second opening K2 on the display substrate 001 surrounds the display area AA. The second opening K2 can block the transmission path of static electricity around the display area AA, thereby further avoiding the adverse effects of static electricity on the image of the display area AA. Optionally, the width of the second opening K2 is the same as the width of the first opening K1, for example, 20 μm.

[0085] In some embodiments, in the display device provided in the present disclosure, such as Figure 3 As shown, the orthographic projection of the second opening K2 on the display substrate 001 is located within the orthographic projection of the light-shielding adhesive 004 on the display substrate 001. In this way, the emitted light from the light strip 005 will be blocked by the light-shielding adhesive 004 and will not shine on the second opening K2, thus avoiding light leakage at the second opening K2.

[0086] In some embodiments, in the display device provided in the present disclosure, such as Figure 4 As shown, the orthographic projection of the light-shielding adhesive 004 onto the display substrate 001 and the third sub-opening K 13 The shortest line connecting the orthographic projections on the display substrate 001 and the first direction X makes an angle α. The orthographic projection of the second opening K2 on the display substrate 001 and the third sub-opening K 13 The angle between the shortest line connecting the orthographic projections on the display substrate 001 and the first direction X is β, where α > β. This ensures that the boundary L1 of the light-shielding adhesive 004 on the side away from the display area AA is located outside the boundary L2 of the second opening K2 on the side away from the display area AA. In other words, it ensures that the orthographic projection of the second opening K2 on the display substrate 001 is located within the orthographic projection of the light-shielding adhesive 004 on the display substrate 001. As a result, the emitted light from the lamp strip 005 will be blocked by the light-shielding adhesive 004 and will not illuminate the second opening K2, thus preventing light leakage at the second opening K2.

[0087] In some embodiments, in the display device provided in the present disclosure, such as Figure 4 As shown, α = arctan(n / m), β = arctan(f / e), where m is the orthographic projection of the light-shielding adhesive 004 onto the display substrate 001 and the third sub-opening K. 13 The distance n from the orthographic projection of the light-shielding adhesive 004 onto the display substrate 001 in the first direction X is the distance from the orthographic projection of the light-shielding adhesive 004 onto the display substrate 001 to the third sub-opening K. 13 The distance e from the orthographic projection of the second opening onto the display substrate 001 in the second direction Y is the distance between the orthographic projection of the second opening onto the display substrate 001 and the third sub-opening K. 13 The distance f between the orthographic projection of the second opening K2 onto the display substrate 001 in the first direction X and the orthographic projection of the third sub-opening K2 onto the display substrate 001 is given by the distance f. 13The distance of the orthographic projection on the display substrate 001 in the second direction Y.

[0088] In some embodiments, in the display device provided in the present disclosure, such as Figure 4 As shown, the extension line of the boundary K2 of the second opening K2 on the side away from the display area AA and in the second direction Y is located at the second sub-opening K. 12 Towards the first child opening K 11 On one side. Optionally, the extension line of the boundary K2 of the second opening K2 away from the display area AA and in the second direction Y intersects with the first sub-opening K. 11 Adjacent second child opening K 12 The distance between the end faces 's' is less than or equal to 52 μm. Specifically, Figure 4 The extension line of the boundary K2 of the second opening K2 away from the display area AA and in the second direction Y is shown, and the first sub-opening K is shown. 11 Adjacent second child opening K 12 The distance between the end faces s is 0. In some embodiments, the extension line of the boundary K2 of the second opening K2 away from the display area AA and in the second direction Y is parallel to the first sub-opening K. 11 Adjacent second child opening K 12 The distance between the end faces s can also be 10μm, 20μm, 30μm, 40μm, 50μm, etc. In this case, it is equivalent to the extension line of the boundary K2 of the second opening K2 away from the display area AA and in the second direction Y being parallel to the first sub-opening K. 11 Cross settings.

[0089] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 As shown, the system may further include a support structure 006 located between the light-shielding adhesive 004 and the display substrate 001. The orthographic projection of the support structure 006 onto the display substrate 001 lies within the orthographic projection of the light-shielding adhesive 004 onto the display substrate 001. The presence of the support structure 006 prevents direct contact between the light-shielding adhesive 004 and the display substrate 001, thereby effectively preventing deformation of the display substrate 001 caused by deformation of the light-shielding adhesive 004 and solving the light leakage problem caused by deformation of the display substrate 001. Optionally, the material of the support structure 006 may be a resin material such as polyethylene terephthalate (PET) or polyimide (PI).

[0090] In some embodiments, in the display device provided in the present disclosure, such as Figures 8 to 10As shown, it may further include: a frame 007, which includes a frame body 701 and a plurality of first protrusions 702. The frame body 701 forms an accommodating space H. The orthographic projection of the accommodating space H on the display substrate 001 is larger than the display area AA and partially overlaps with the border area BB. The orthographic projection of the plurality of first protrusions 702 on the display substrate 001 is located on the border area BB on the side where the bonding area BD is located. The plurality of first protrusions 702 extend toward the accommodating space H and are arranged side by side along the first direction X. The light strip 005 includes a plurality of LED beads 501 arranged sequentially in the first direction X. The LED beads 501 are disposed in the grooves between the first protrusions 702 so that the first protrusions 702 can limit the LED beads 501 and facilitate the heat dissipation of the LED beads 501, avoiding damage to the LED beads 501 due to excessive temperature and affecting the user experience. Optionally, the frame body 701 and the plurality of first protrusions 702 are an integral structure.

[0091] In some embodiments, in the display device provided in the present disclosure, such as Figure 8 and Figure 9 As shown, to facilitate the installation of each LED bead 501 into the groove of the multiple first protrusions 702, the multiple first protrusions 702 can be provided, including multiple first sub-protrusions c and multiple second sub-protrusions d. The first sub-protrusions c and the second sub-protrusions d are alternately arranged in the first direction X. The size of the LED bead 501 in the second direction Y is larger than the size of the second sub-protrusion d in the second direction Y and smaller than the size of the first sub-protrusion c in the second direction Y. The second direction Y is the direction from the display area AA to the binding area BD.

[0092] Optionally, the display device provided in this disclosure can be applied to the touch field, such as mobile phones / small displays; however, since the display device is touch-sensitive, the hand will directly contact the display device, and the display device may sometimes be hot, which may cause an unpleasant heat sensation for the user. Through the shape design of the first sub-protrusion c and the second sub-protrusion d, on the one hand, some space can be left between them and the LED bead 501 to facilitate heat dissipation; on the other hand, the bonding area of ​​the LED strip tape (e.g., black and white adhesive 503) and the frame 007 can be increased, which is beneficial to the stability of the device assembly. Considering the above factors, the ratio of the size of the first sub-protrusion c in the second direction Y to the size of the second sub-protrusion d in the second direction Y needs to be set to be greater than 1 and less than or equal to 2. For example, the size of the LED bead 501 in the second direction Y is 0.85mm, the size of the first sub-protrusion c in the second direction Y is 0.95mm, the size of the second sub-protrusion d in the second direction Y is 0.5mm, and the ratio of the size of the first sub-protrusion c in the second direction Y to the size of the second sub-protrusion d in the second direction Y is 1.9.

[0093] In some embodiments of the display device provided in this disclosure, to facilitate heat dissipation of the LED bead 501, the LED bead 501 needs to maintain a certain distance from the first protrusion 702 in the first direction X. For example, the size of the LED bead 501 in the first direction X is 3mm, and the size of the groove between two adjacent first protrusions 702 (i.e., adjacent first sub-protrusions c and second sub-protrusions d) in the first direction X is 3.6mm, which is equivalent to the LED bead 501 maintaining a distance of 0.3mm from the first protrusions 702 on both sides in the first direction X. Optionally, the distance between the light-emitting surface of the LED bead 501 and the display area AA in the second direction Y is g, and the distance between the first sub-protrusion c and the second sub-protrusion d in the first direction X is h (e.g., ...). Figure 9 As shown, in order to ensure that as much light emitted from the LED 501 as possible is incident on the display area AA, g / h can be set to >0.7, such as 0.8, 0.9, 1, etc.

[0094] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 and Figure 7 As shown, the LED strip 005 may further include a flexible backlight circuit board 502, which is electrically connected to a plurality of LED beads 501. The flexible backlight circuit board 502 overlaps the surface of the frame 007 facing the display substrate 001. Optionally, the flexible backlight circuit board 502 is bonded to all the first protrusions 702 and the portion of the frame body 701 adjacent to the first protrusions 702 using black and white adhesive 503, thereby increasing the bonding area between the flexible backlight circuit board 502 and the frame 007 and preventing the LED beads 501 from shaking during reliability tests, which would affect the optical performance of the product.

[0095] In some embodiments, in the display device provided in the present disclosure, such as Figure 8 , Figure 10 and Figure 11 As shown, it may further include: a reflective sheet 008 located within the accommodating space H, the reflective sheet 008 including a reflective sheet body 801 and a plurality of second protrusions 802 located on the side of the reflective sheet body 801 near the lamp bead 501; the orthographic projection of the lamp bead 501 on the display substrate 001 lies within the orthographic projection of the second protrusions 802 on the display substrate 001, the first protrusions 702 and the second protrusions 802 are staggered, that is, each first protrusion 702 is located between two adjacent second protrusions 802, or each second protrusion 802 is located between two adjacent first protrusions 702. In this way, not only can the first protrusions 701 and the second protrusions 802 cooperate with each other to facilitate the positioning and assembly of the lamp bead 501; but the second protrusions 802 can also reflect the emitted light from the lamp bead 501, thereby effectively enhancing the light efficiency. Optionally, the reflective sheet body 801 and the plurality of second protrusions 802 are an integral structure.

[0096] Optionally, the dimension of the second protrusion 802 in the first direction X can be equal to the dimension of the lamp bead 501 in the first direction X, for example, both being 3mm, to facilitate the second protrusion 802 matching the dimension of the groove between the first protrusion 501 in the first direction X (e.g., 3.6mm). Optionally, the dimension of the groove between adjacent second protrusions 802 in the second direction Y is greater than the dimension of the first protrusion 702 in the second direction Y, to facilitate the placement of the first protrusion 702 at the groove of each second protrusion 802. For example, the dimension of the groove between adjacent second protrusions 802 in the second direction Y is 0.2mm larger than the dimension of the first sub-protrusion c in the second direction Y.

[0097] In some embodiments, in the display device provided in the present disclosure, there is a gap between the surface of the lamp bead 501 away from the display substrate 001 and the surface of the reflector 008 facing the display substrate 001, for example, a gap of 0.5 mm, so as to facilitate heat dissipation of the lamp bead 501 and prevent the lamp bead 501 from contacting the reflector 008 and burning the reflector 008.

[0098] In some embodiments, in the display device provided in this disclosure, the reflective sheet 008 further has a reflective surface. To ensure that the reflective surface can reflect the emitted light from the lamp bead 501, the reflective surface of the reflective sheet 008 needs to face the display substrate 001. To facilitate identification of the reflective surface during installation, such as... Figure 11 and Figure 12 As shown, a first anti-mistake structure 803 can be provided on the reflective sheet 008, and the relative position of the first anti-mistake structure 803 and the center of the reflective surface is fixed. For example, when the reflective surface of the reflective sheet 008 faces upward toward the display substrate 001, the first anti-mistake structure 803 is located at the lower right corner of the center of the reflective surface. Optionally, the shape of the first anti-mistake structure 803 is not limited to... Figure 12 The right-angled triangular pyramid shown can also be any other shape, which is not limited here.

[0099] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 , Figure 10 , Figure 11 and Figure 13As shown, it may also include a light guide plate 010 located on the side of the reflector 008 facing the display substrate 001 within the accommodating space H. The orthographic projection of the light guide plate 010 on the display substrate 001 is approximately the same as the orthographic projection of the reflector body 801 on the display substrate 001, that is, the orthographic projections of the two coincide exactly, or are within the error range caused by factors such as manufacturing and measurement. The lamp bead 501 is located on the side of the light guide plate 010 facing the bonding area BD, and the distance between the light-emitting surface of the lamp bead 501 and the light guide plate 010 is less than or equal to 0.1 mm, so as to facilitate the uniform mixing of the light emitted by the lamp bead 501 through the light guide plate 010.

[0100] In some embodiments, in the display device provided in the present disclosure, such as Figure 13 and Figure 14 As shown, the light guide plate 010 has a light-emitting surface that needs to face the display substrate 001. To facilitate accurate identification of the light-emitting surface during installation, a second anti-foolproof structure 1001 can be provided on the light guide plate 010, ensuring that the relative position of the second anti-foolproof structure 1001 and the center of the light-emitting surface is fixed. Optionally, when the light-emitting surface of the light guide plate 010 faces upward toward the display substrate 001, the second anti-foolproof structure 1001 is located at the lower right corner of the center of the light-emitting surface. Optionally, the shape of the second anti-foolproof structure 1001 is not limited to... Figure 14 The right-angled triangular pyramid shown can also be any other shape, which is not limited here.

[0101] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 , Figure 10 and Figure 15 It also includes a diffuser sheet 011 and a black adhesive 012 located in the accommodating space H. The diffuser sheet 011 is located on the side of the light guide plate 010 away from the reflector sheet 008, and the black adhesive 012 is located on the side of the diffuser sheet 011 away from the light guide plate 010. The orthographic projection of the black adhesive 012 on the display substrate 001 is located in the border area BB where the bonding area BD is located, which can avoid the defect of uneven light mixing (hotspot).

[0102] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 , Figure 10 and Figure 16 As shown, it may also include a prism 013 located on the side of the diffuser 011 away from the light guide plate 010. To ensure that the product is free of moiré defects, the angle between the extension direction of the prism 013 and the first direction X can be set to approximately equal to... That is, the angle between the extension direction of prism 013 and the first direction X and Equal, or, the angle between the extension direction of prism 013 and the first direction X is equal to... The difference is within the error range caused by factors such as manufacturing and measurement. For example, The angle between the extension direction of prism 013 and the first direction X is greater than or equal to 43° and less than or equal to 45°.

[0103] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, it may also include a main flexible circuit board 014, which includes a light-emitting control pad 1401. The backlight flexible circuit board 502 is electrically connected to the light-emitting control pad 1401 to provide a signal for controlling the light-emitting brightness of the lamp bead 501 through the main flexible circuit board 014.

[0104] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the main flexible circuit board 014 may also include a display chip 1402. For ease of fabrication, the display chip 1402 and the light-emitting control pad 1401 may be located on the same side of the main flexible circuit board 014, and the display substrate 001 is electrically connected to the display chip 1402. In this way, the main flexible circuit board 014 can also provide the display substrate 001 with a drive signal to control the deflection of the liquid crystal.

[0105] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the main flexible circuit board 014 may further include a first adsorption area M1. The first adsorption area M1 is used to flatten the main flexible circuit board 014 during the bonding process with the display substrate 001 and the backlight flexible circuit board 502, so as to facilitate the smooth progress of the bonding process. Optionally, to enhance the adsorption effect during the bonding process, components are prohibited from being placed in the first adsorption area M1.

[0106] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the main flexible circuit board 014 may also include a QR code Q, which is located on the opposite side (e.g., the back side) of the side where the light-emitting control pad is located (e.g., the front side). The QR code Q contains material number information, production date, etc., to facilitate the binding of the main flexible circuit board 014 with the product model of the display panel (including the oppositely placed display substrate 001 and the opposing substrate 002).

[0107] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the main flexible circuit board 014 may further include a first bending region W1 and a first flexible protective film 1403. The first flexible protective film 1403 covers the first bending region W1 to facilitate the bending of the main flexible circuit board 014 toward the side of the display substrate 001 away from the opposing substrate 002, thereby ensuring a narrow bezel for the product. For example, the first flexible protective film 1403 can be formed by covering the first bending region W with green oil.

[0108] In some embodiments, in the display device provided in the present disclosure, such as Figure 18 and Figure 19 As shown, the system may also include a touch panel 015 located on the side of the opposing substrate 002 away from the display substrate 001. For example, the touch panel 015 may be located between the opposing substrate 002 and the first polarizer 016. The touch panel 015 includes multiple touch electrode groups 1501, each including a touch sensing electrode Rx and at least one touch driving electrode Tx disposed on the same layer. Optionally, the touch driving electrode Tx may be distributed on both sides of the touch sensing electrode Rx along its extension direction. For example, the touch sensing electrode Rx extends along the second direction Y, and the touch driving electrode Tx is located on both sides of the touch sensing electrode Rx arranged side by side in the first direction X. Optionally, the touch sensing electrode Rx may be an elongated electrode, and the touch driving electrode Tx may be an electrode with protrusions to increase the relative area of ​​the touch driving electrode Tx and the touch sensing electrode Rx, thereby increasing the mutual capacitance between them and improving touch sensitivity.

[0109] To prevent the touch driving electrode Tx and the touch sensing electrode Rx from blocking the display light, transparent conductive materials (such as indium tin oxide ITO) can be used to fabricate the touch driving electrode Tx and the touch sensing electrode Rx. Furthermore, this disclosure achieves touch control through a self-capacitive touch principle. Specifically, the self-capacitive touch principle is as follows: Figures 20 to 24 As shown, when a finger touches the touch driving electrode Tx or the touch sensing electrode Rx, it is equivalent to adding a capacitor to ground (GND), increasing the capacitance detected at the touch point. The flexible touch circuit board 017 detects the change in capacitance and feeds it back to the system, thus determining whether a touch has occurred. When a finger touches the area between the touch driving electrode Tx and the touch sensing electrode Rx, the finger shields part of the electric field at the touch point, causing a decrease in the capacitance detected at the touch point. The flexible touch circuit board 017 detects the change in capacitance and feeds it back to the system, thus determining whether a touch has occurred. The touch panel 015 based on the self-capacitance principle offers high touch resolution, a thin and light product, low material cost, high transmittance, and good optical performance.

[0110] Figure 24 This is a timing diagram for the touchscreen, showing communication with the main central processing unit (CPU) via the clock (SCL) and data (SDA) pins. During communication, the flexible touchscreen circuit board 017 always acts as a slave device, and all communication is initiated by the main CPU. The start (S) flag is triggered when SCL remains high and SDA transitions from high to low; address and data information are transmitted after the start flag. Upon completion of communication, the main CPU sends a stop (P) signal, at which point SCL remains high and SDA transitions from low to high.

[0111] The central control system of white goods in related technologies requires manual button operation. In this disclosure, a touch panel 015 between the opposing substrate 002 and the first polarizer 016 is used to realize touch operation. When the display device is a white goods device, it can not only ensure good touch performance, but also be thin, light-transmitting and have good light transmission, which can significantly improve the user experience.

[0112] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the flexible touch circuit board 017 includes a second adsorption area M2. The second adsorption area M2 is used to flatten the flexible touch circuit board 017 during the bonding process with the touch panel 015, so as to facilitate the smooth progress of the bonding process. Optionally, to enhance the adsorption effect during the bonding process, components are not allowed to be placed in the second adsorption area M2.

[0113] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the flexible touch circuit board 017 may further include a second bending area W2 and a second flexible protective film 1701. The second flexible protective film 1701 covers the second bending area W2 to facilitate the bending of the flexible touch circuit board 017 toward the side of the display substrate 001 away from the opposing substrate 002, thereby ensuring a narrow bezel for the product. For example, the second flexible protective film 1701 can be formed by covering the second bending area W2 with green oil. Optionally, the orthographic projection of the first bending area W1 onto the flexible touch circuit board 017 is located within the second bending area.

[0114] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the flexible touch circuit board 017 also includes a touch chip 1702 and a reinforcing plate 1703. The reinforcing plate 1703 is located on one side of the flexible touch circuit board 1702. The side where the reinforcing plate 1703 is located (e.g., the back side) is opposite to the side where the touch chip 1702 is located (e.g., the front side). The area where the reinforcing plate 1703 is located roughly overlaps with the area where the touch chip 1702 is located, that is, the two exactly overlap or within the error range caused by factors such as manufacturing and measurement. In this way, the reinforcing plate 1703 can provide better support for the touch chip 1702, which is conducive to the bonding of the touch chip 1702 and the touch line 1502.

[0115] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, the main flexible circuit board 014 may also include a first pin area N1 electrically connected to the main CPU, and the touch flexible circuit board 017 may also include a second pin area N2 electrically connected to the main CPU.

[0116] In some embodiments, in the display device provided in the present disclosure, such as Figure 17 As shown, an easy-tear sticker 018 can also be attached to the upper right corner of the surface of the first polarizer 016 away from the touch panel 015, and a portion of the easy-tear sticker 018 extends relative to the first polarizer 016. Optionally, as... Figure 25 and Figure 26 As shown, the easy-tear sticker 018 may include a release film 1801, a substrate 1802, an adhesive tape 1803, and a protective film 1804 stacked together. The release film 1801, adhesive tape 1803, and protective film 1804 are all the same size, and the substrate 1802 only covers the edge of the adhesive tape 1803. In practice, the release film 1801 can be peeled off from the substrate 1802 first, and then the adhesive tape 1803 not covered by the substrate 1802 can be pasted onto the first polarizer 106, making the substrate 1802 extend relative to the first polarizer 106. When it is necessary to remove the protective film from the first polarizer 106, the release film 018 in the area where the substrate 1802 is located can be lifted, thereby peeling off the easy-tear sticker 018 and simultaneously separating the protective film from the first polarizer 106.

[0117] In some embodiments, in the display device provided in the present disclosure, a barcode (MDL) may also be provided on the side of the back plate 009 away from the reflective sheet 008 (i.e., the back side) to facilitate the tracing of information such as the place of origin and model of the display device through the barcode.

[0118] In some embodiments, in the display device provided in the present disclosure, such as Figure 5 and Figure 18 As shown, the display device may also include a liquid crystal layer 020 located between the display substrate 001 and the opposing substrate 002, a second polarizer 021 located on the side of the display substrate 001 away from the opposing substrate 002, and a sealant 022 sealing the liquid crystal layer 020 between the display substrate 001 and the opposing substrate 002. The display substrate 001 may also include a first substrate 102, a gate insulating layer 103, an interlayer dielectric layer 104, etc., and the opposing substrate 002 may also include a planarization layer 203, a second substrate 204, etc. Other essential components of the display device are those that should be understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the present disclosure.

[0119] Accordingly, this disclosure provides a method for assembling a display device, which may include the following steps:

[0120] Step 1: Fix the touch panel 015 to the light-emitting side of the display panel. The display panel includes a display substrate 001 and a counter substrate 002 placed opposite each other.

[0121] The second step is to bind and connect the main flexible circuit board 014 to the display substrate 001, bind and connect the touch flexible circuit board 017 to the touch panel 015, and fix the light guide assembly to the light strip 005. The light guide assembly includes a frame 007, a reflector 008, a light guide plate 010, a diffuser 011, and a prism 012.

[0122] The third step is to obtain the center point of the display panel and the center point of the light guide component, and control the center point of the display panel to coincide with the center point of the light guide component to achieve the alignment of the display panel and the light guide component;

[0123] Step 4: Weld the backlight flexible circuit board 502 of the light strip 005 to the main flexible circuit board 014 for fixation;

[0124] Step 5: Apply pad tape to the main flexible circuit board 014. The pad tape should at least cover the area where the light-emitting control pad 1401 of the main flexible circuit board 014 is located and the area where the display chip 1402 is located.

[0125] Step 6: Apply an easy-tear sticker 018 to the side of the display panel away from the touch panel 015.

[0126] In the above assembly method, the assembly of the lamp strip 005 and the light guide plate 010 in the light guide assembly is manual, while the remaining steps can be automated by machinery, ensuring high assembly precision, accurate positioning, uniform product stress, improved product yield, and enhanced market competitiveness. Furthermore, using the assembly method disclosed herein, the alignment and bonding tolerance between the display area AA and the light-shielding adhesive 004 can be controlled within 0.15mm, effectively preventing the light-shielding adhesive 004 from obstructing pixels.

[0127] In some embodiments, the display device provided in this disclosure can be any product or component with display functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, smartwatch, fitness wristband, or personal digital assistant. This display device includes, but is not limited to, components such as a radio frequency unit, network module, audio output & input unit, sensor, display unit, user input unit, interface unit, memory, processor, and power supply. Furthermore, those skilled in the art will understand that the above structure does not constitute a limitation on the display device provided in this disclosure. In other words, the display device provided in this disclosure may include more or fewer of the aforementioned components, or combine certain components, or have different component arrangements.

[0128] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A display device, wherein, include: The display substrate includes a display area and a border area surrounding the display area, at least a portion of the border area serving as a bonding area; The display substrate includes a grounding terminal located in the bonding area; A counter substrate is positioned opposite to the display substrate. The orthographic projection of the counter substrate onto the display substrate exposes the bonding area. The counter substrate includes a black matrix disposed on a side facing the display substrate and an electrostatic shielding layer disposed on a side facing away from the display substrate. The black matrix includes a first opening. The orthographic projection of the first opening onto the display substrate is located within the border area on the side where the bonding area is located. The first opening interrupts the black matrix in a first direction, and the first direction intersects the direction from the display area to the bonding area. Conductive adhesive connects the grounding terminal and the electrostatic shielding layer. The orthographic projection of the conductive adhesive on the display substrate is located within the frame area on the side where the bonding area is located. The conductive adhesive is in contact with the side of the black matrix facing the bonding area and perpendicular to the display substrate. It also includes: a light-shielding adhesive located on the side of the display substrate away from the opposing substrate, and a light strip located on the side of the light-shielding adhesive away from the display substrate, wherein the orthographic projection of the light-shielding adhesive on the display substrate surrounds the display area, and the orthographic projection of the light strip on the display substrate is located within the border area on the side where the bonding area is located; The minimum preset distance between the orthographic projection of the first opening on the display substrate and the orthographic projection of the light-shielding adhesive on the display substrate is 'a'. The manufacturing tolerance of the light-shielding adhesive is '△1'. The assembly tolerance of the light-shielding adhesive is '△2'. The manufacturing tolerance of the first opening is '△3'. The assembly tolerance of the display substrate and the opposing substrate is '△4'. In the direction perpendicular to the display substrate, the maximum distance between the surface of the light-shielding adhesive facing the display substrate and the surface of the display substrate facing the opposing substrate is 'b'. The critical angle at which the emitted light from the lamp strip undergoes total internal reflection on the surface of the display substrate facing the opposing substrate is 'θ'. .

2. The display device as claimed in claim 1, wherein, At a certain distance from the conductive adhesive, the first opening includes a first sub-opening, the first sub-opening being arc-shaped, and the arc of the first sub-opening being greater than or equal to 90° and less than or equal to 94°.

3. The display device as claimed in claim 2, wherein, The first opening further includes a second sub-opening and a third sub-opening extending along the first direction, the first sub-opening connecting the second sub-opening and the third sub-opening; in the second direction, the distance between the orthographic projection of the second sub-opening on the display substrate and the display area is greater than the distance between the orthographic projection of the third sub-opening on the display substrate and the display area, the second direction being the direction from the display area to the bonding area.

4. The display device as claimed in claim 3, wherein, The black matrix also includes a second opening, the second opening's orthographic projection on the display substrate surrounding the display area.

5. The display device as claimed in claim 4, wherein, The orthographic projection of the second opening on the display substrate lies within the orthographic projection of the light-shielding adhesive on the display substrate.

6. The display device as claimed in claim 4 or 5, wherein, The angle between the shortest line connecting the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate and the first direction is α, and the angle between the shortest line connecting the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate and the first direction is β, where α > β.

7. The display device as claimed in claim 6, wherein, , Where m is the distance between the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the first direction, n is the distance between the orthographic projection of the light-shielding adhesive on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the second direction, e is the distance between the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the first direction, and f is the distance between the orthographic projection of the second opening on the display substrate and the orthographic projection of the third sub-opening on the display substrate in the second direction.

8. The display device according to any one of claims 4, 5, and 7, wherein, The width of the first opening is the same as the width of the second opening.

9. The display device as claimed in claim 5 or 7, wherein, The second opening is located on the side away from the display area, and the boundary extension line in the second direction is located on the side of the second sub-opening facing the first sub-opening. The distance between the boundary extension line of the second opening on the side away from the display area and the end face of the first sub-opening adjacent to the second sub-opening is less than or equal to 52 μm.

10. The display device according to any one of claims 2 to 5, 7, wherein, It also includes a support structure located between the light-shielding adhesive and the display substrate, wherein the orthographic projection of the support structure on the display substrate is located within the orthographic projection of the light-shielding adhesive on the display substrate.

11. The display device according to any one of claims 3 to 5, 7, wherein, Also includes: The frame includes a frame body and a plurality of first protrusions. The frame body encloses an accommodating space. The orthographic projection of the accommodating space on the display substrate is larger than the display area and partially overlaps with the border area. The orthographic projection of the plurality of first protrusions on the display substrate is located in the border area on the side where the bonding area is located. The plurality of first protrusions extend toward the accommodating space and are arranged side by side along the first direction. The light strip includes a plurality of LED beads arranged sequentially in the first direction, and the LED beads are disposed in the grooves between each of the first protrusions.

12. The display device as claimed in claim 11, wherein, The plurality of first protrusions include a plurality of first sub-protrusions and a plurality of second sub-protrusions, wherein the first sub-protrusions and the second sub-protrusions are alternately arranged in the first direction; The size of the LED bead in the second direction is greater than the size of the second sub-protrusion in the second direction and less than the size of the first sub-protrusion in the second direction, where the second direction is the direction from the display area to the binding area.

13. The display device as claimed in claim 12, wherein, The ratio of the size of the first sub-protrusion in the second direction to the size of the second sub-protrusion in the second direction is greater than 1 and less than or equal to 2.

14. The display device as claimed in claim 12 or 13, wherein, The distance between the light-emitting surface of the LED bead and the display area in the second direction is g, the distance between the first sub-protrusion and the second sub-protrusion in the first direction is h, g / h > 0.7, and the second direction is the direction from the display area to the binding area.

15. The display device as claimed in claim 11, wherein, It also includes: a reflective sheet located within the accommodating space, the reflective sheet including a reflective sheet body and a plurality of second protrusions located on the side of the reflective sheet body near the lamp bead; The orthographic projection of the LED on the display substrate is located within the orthographic projection of the second protrusion on the display substrate, and the first protrusion is disposed in the groove of each of the second protrusions.

16. The display device as claimed in claim 15, wherein, There is a gap between the surface of the lamp bead away from the display substrate and the surface of the reflector facing the display substrate.

17. The display device as claimed in claim 15 or 16, wherein, The reflective sheet includes a reflective surface and a first anti-foolproof structure. The reflective surface faces the display substrate, and the relative position of the first anti-foolproof structure and the center of the reflective surface is fixed.

18. The display device as claimed in claim 15 or 16, wherein, It also includes a light guide plate located within the accommodating space on the side of the reflective sheet facing the display substrate, wherein the orthographic projection of the light guide plate on the display substrate is approximately coincident with the orthographic projection of the reflective sheet body on the display substrate. The LED bead is located on the side of the light guide plate facing the bonding area, and the distance between the light-emitting surface of the LED bead and the light guide plate is less than or equal to 0.1 mm.

19. The display device as claimed in claim 18, wherein, The light guide plate includes a light-emitting surface and a second anti-foolproof structure. The light-emitting surface faces the display substrate, and the relative position of the second anti-foolproof structure and the center of the light-emitting surface is fixed.

20. The display device as claimed in claim 11, wherein, The light strip also includes a backlight flexible circuit board, which is electrically connected to the plurality of LED beads; The display device further includes a main flexible circuit board, which includes a first adsorption area for flattening the main flexible circuit board during the process of bonding the main flexible circuit board to the display substrate and the backlight flexible circuit board.

21. The display device as claimed in claim 20, wherein, The main flexible circuit board also includes a QR code, which contains material number information and production date.

22. The display device according to any one of claims 1 to 5, 7, 12, 13, 15, 16, 19 to 21, wherein, It also includes a touch panel located on the side of the opposing substrate away from the display substrate, and a touch flexible circuit board electrically connected to the touch panel; the touch flexible circuit board includes a second adsorption area, which is used to flatten the touch flexible circuit board during the process of binding the touch flexible circuit board to the touch panel.

23. The display device as claimed in claim 22, wherein, The flexible touch circuit board also includes a touch chip and a reinforcing plate. The reinforcing plate is located on one side of the flexible touch circuit board, and the side where the reinforcing plate is located is opposite to the side where the touch chip is located. The area where the reinforcing plate is located coincides with the area where the touch chip is located.

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