A display panel and a manufacturing method thereof, and a display device

Abstract

This invention discloses a display panel and its manufacturing method, as well as a display device. The panel includes a first substrate and a second substrate disposed opposite each other, a sealing adhesive for a non-display area disposed between the first and second substrates, and a support pillar assembly located within the display area of ​​the first substrate. The four edges of the first and second substrates are bonded and fixed together by the sealing adhesive, which encloses a box-shaped space filled with liquid crystal. The sealing adhesive includes a first sealing adhesive and a second sealing adhesive disposed opposite to and on the data bonding side of the display panel, and a third sealing adhesive and a fourth sealing adhesive disposed opposite to the left and right sides of the display panel. The display panel also includes a first adhesive structure located between the first sealing adhesive and the display area, tightly adhering to the surface of the first sealing adhesive near the support pillar assembly. This solves the problem of blackening of the data bonding edge on irregularly shaped products during partial exposure or cold cutting processes.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] With the switching of display scenes and the upgrading of display technology, in order to improve the adaptability and market share of products, large-size display panels such as TVs have gradually generated demand for special-size products. When processing special-shaped screens, in order to save the manufacturing cost of the mask, the color film substrate currently mainly adopts the local exposure process of the proximity exposure machine, and the exposure machine shielding plate is required to block the non-exposure area. The disadvantage of this process is the existence of exposure gray areas. In essence, the actual exposure amount is weakened after the light is diffracted and irradiated to the shielding area. The weak exposure of some areas causes image loss or abnormal characteristics, and the degree of loss will vary due to different degrees of light curing of the material and different development intensities.

[0003] In the traditional solution, on the opposite side of the data binding of the display panel, the color filter located in the first 6 rows outside the display area needs to increase the scanning signal through the circuit to maintain the display L0 state, and then shield the light. When the exposure accuracy of the color filter cannot completely cover the 6 rows, the display L0 picture is abnormal, the shading effect is poor, and there is a risk of light leakage; however, the 6 rows are input with a separate scanning signal, and L0 is continuously displayed when the display panel is lit, maintaining a pure black picture, which will lead to excessive energy consumption and driving pressure of the product. Since the display panel is a special-shaped screen and the shading plate has low movement accuracy, the edge of the columnar spacer is generally set in the display area, so that there is no physical support between the frame sealant and the columnar spacer, resulting in the bending of the color filter (CF) substrate at the corresponding part, thereby reducing the box thickness at the corresponding part, and the liquid crystal is less, causing the edge of the opposite side of the data binding of the display area to be black. Summary of the invention

[0004] In view of the above problems, an object of the present invention is to provide a display panel capable of avoiding the problem of blackening of the side edges due to data binding during local exposure or cold cutting processes.

[0005] Another object of the present invention is to provide a method for manufacturing the above-mentioned display panel.

[0006] Another object of the present invention is to provide a display device including the above display panel.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] According to one aspect of the present invention, there is provided a display panel, comprising:

[0009] A first substrate and a second substrate arranged opposite to each other, a frame sealant arranged in a non-display area between the first substrate and the second substrate, and a support column group located in a display area of ​​the first substrate;

[0010] The edges of the first substrate and the second substrate are bonded and fixed by the frame-sealing adhesive, and the frame-sealing adhesive encloses to form a box-shaped space, and the box-shaped space is filled with liquid crystal;

[0011] The frame sealant includes a first frame sealant and a second frame sealant which are relatively arranged on the data binding opposite side and the data binding side of the display panel, and a third frame sealant and a fourth frame sealant which are relatively arranged on the left and right sides of the display panel;

[0012] The display panel further includes a first colloid structure located between the first substrate and the second substrate. The first colloid structure is located between the first frame-sealing glue and the display area and is closely attached to a surface of one side of the first frame-sealing glue close to the support column group.

[0013] In addition, an optional solution is that the width of the first colloidal structure d<L-15%D-△;

[0014] in

[0015] L is the distance between the surface of the first frame sealant close to the display area and the display area;

[0016] The D is the width of the first sealant;

[0017] The △ is the position accuracy of the first frame sealing glue fluctuation.

[0018] In addition, an optional solution is that the width of the first colloidal structure is 1.6±0.24 mm.

[0019] In addition, an optional solution is that a plurality of first supporting balls are doped into the frame sealing glue;

[0020] A plurality of second supporting spheres are doped in the first colloidal structure.

[0021] In addition, an optional solution is that the diameter of the second supporting sphere is smaller than the diameter of the first supporting sphere, and the diameter of the second supporting sphere is larger than the process height of the supporting column group.

[0022] In addition, an optional solution is that the diameter of the second supporting sphere is 3.8 μm.

[0023] In addition, an optional solution is that the height of the first colloid structure is greater than the height of the support column group after the first substrate and the second substrate are assembled into a box, but is less than the height of the frame-sealing glue.

[0024] In addition, an optional solution is that a side of the first substrate facing away from the second substrate includes a color resist layer, and the color resist layer includes a plurality of color filters arranged in an array;

[0025] The colloidal structure at least covers 4.5 rows of color filters of the color resistance layer close to the first frame sealing glue.

[0026] In addition, an optional solution is that, on the side of the display panel opposite to the data binding, the relative distance between the support column group and the inner boundary of the frame sealant gradually increases from the left side to the right side.

[0027] In addition, an optional solution is that the display panel further includes a second glue structure located on the side of the display panel opposite to the data binding side, and the second glue structure is adhered and fixed to a side of the first frame sealing glue away from the display area.

[0028] According to another aspect of the present invention, there is provided a method for manufacturing a display panel, comprising:

[0029] Applying a sealing glue on the non-display area of ​​the first substrate;

[0030] Coating a second colloid structure on the data binding side of the first substrate, wherein the second colloid structure is located on a side of the frame sealant away from the display area;

[0031] Applying a first colloidal structure on the data binding side of the first substrate, wherein the first colloidal structure is closely attached to a side of the frame sealant close to the display area;

[0032] Dropping liquid crystal on the second substrate;

[0033] The first substrate and the second substrate are aligned with each other.

[0034] According to yet another aspect of the present invention, a display device is provided, comprising the above-mentioned display panel.

[0035] The beneficial effects of the present invention are as follows:

[0036] The embodiment of the present invention provides a display panel and a manufacturing method thereof, and a display device to solve the problem of blackening of the edge on the data binding side of a special-shaped product during a partial exposure or cold cutting process. By filling a first glue structure with a fixed width and height between the first frame sealant and the display area, and the height of the first glue structure is between the height of the support column combination frame sealant after the box is aligned, the first glue frame can play a buffering and supporting role for the area between the support column group and the frame sealant on the data binding side; to meet the design requirements of the special-shaped screen, on the data binding side of the display panel, the distance between the edge of the support column group and the inner edge of the frame sealant gradually increases from the left to the right, and the design of the first glue structure can effectively shorten the unsupported distance between the frame sealant and the support column group, avoid the box thickness reduction of the corresponding area caused by the bending deformation of the first substrate, maintain the uniformity of the box thickness, effectively improve the problem of blackening of the edge on the data binding side, and no additional mask plate change investment is required, saving processing costs, and greatly improving the designability of special-shaped cold cutting products. The first glue structure is tightly attached to the frame sealant, which can prevent the liquid crystal from penetrating into the gap to refract and transmit light, and produce an exposure gray area. The first colloidal structure is used to fill the first 6 rows of color filter positions outside the display area, and the liquid crystal in the corresponding area is removed. Based on the vertical effect of the upper and lower POL polarization directions, the equivalent L0 state is reached without power-on. There is no need to add additional scanning signals to the 6 rows to maintain the display L0 state, which can effectively reduce product energy consumption and driving pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0038] Figure 1 The figure shows the principle diagram of generating exposure gray area by the shielding exposure technology in the prior art.

[0039] Figure 2 A schematic diagram showing the blackening of the edges of the opposite sides of the data binding due to the bending of the first substrate in the prior art.

[0040] Figure 3 A side view of a display panel provided by an embodiment of the present invention is shown.

[0041] Figure 4 A top view of a display panel provided by an embodiment of the present invention is shown.

[0042] Figure 5 A schematic diagram showing the positional relationship between the first glue structure, the frame sealing glue and the support column provided in an embodiment of the present invention is shown.

[0043] Figure 6 A flow chart showing a method for manufacturing a display panel provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly stipulated and limited, a first feature being “on” or “below” a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0047] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] With the switching of display scenes and the upgrading of display technology, in order to improve the adaptability and market share of products, large-size display panels such as TVs have gradually generated a demand for special-size products. When processing special-shaped screens, in order to save the manufacturing cost of the mask, the color film substrate currently mainly adopts the local exposure process of the proximity exposure machine, and the exposure machine shielding plate 100 is required to block the non-exposure area. The disadvantage of this process is that there is an exposure gray area, such as Figure 1 As shown in the figure, area A is the exposure area, and area C is the shading area. The essence of the exposure gray area is that the actual exposure amount is weakened after the light is diffracted and irradiated to the shading area, resulting in a weak explosion in area B, causing image loss or abnormal characteristics. In addition, due to the different photocuring degrees and development intensities of the materials, the degree of loss will change accordingly, which can easily lead to abnormal exposure positions of the columnar spacers (Photo Spacer, PS), black matrix (Black Matrix, BM), and color filters (RGB resin).

[0049] In the traditional solution, on the opposite side of the display panel where data is bound, the color filters located in the first 6 rows outside the display area need to increase the scanning signal through the circuit to maintain the display L0 state, and then perform light shielding. When the exposure accuracy of the color filter cannot completely cover the 6 rows, the display L0 picture is abnormal, the light shielding effect is poor, and there is a risk of light leakage. In the traditional process, the 6 rows are input with scanning signals separately, and L0 is continuously displayed when the display panel is lit, maintaining a pure black picture, which will lead to excessive energy consumption and driving pressure of the product. Since the display panel is a special-shaped screen and the movement accuracy of the light shielding plate is low, the edge of the columnar spacer is generally set in the display area, so that there is no physical support between the frame sealant and the columnar spacer, resulting in the bending of the color filter (CF) substrate in the corresponding part, such as Figure 2 As shown, the bending of the color film substrate causes the box thickness of the corresponding part to decrease, resulting in less liquid crystal, which causes the edge of the opposite side of the display area to turn black.

[0050] The embodiment of the present disclosure provides a display panel. It should be noted that the display panel includes but is not limited to a special-shaped screen.

[0051] Combination Figure 3-5 As shown, the display panel includes a first substrate 1 and a second substrate 2 arranged opposite to each other, a frame sealant 3 arranged between the first substrate 1 and the second substrate 2, and a support column group formed on the first substrate 1. In this embodiment, the support column group includes a plurality of support columns 4 arranged in an array on the first substrate 1 close to the second substrate 2, and the support columns 4 are columnar spacers. The support columns 4 are conical in shape. After the first substrate 1 and the second substrate 2 are aligned, the end of the support column 4 facing away from the first substrate 1 abuts against the second substrate 2 to play a supporting role. The height of the support column 4 before alignment is not less than the box thickness of the display panel, and the height after alignment is equal to the box thickness of the display panel.

[0052] The frame sealant 3 is located in the non-display area 300 of the display panel, and the support column group is located in the display area 200 of the display panel. Figure 3 The left and right sides of the midpoint line are the non-display area 300 and the display area 200 respectively.

[0053] In this embodiment, the first substrate 1 is a color filter (CF) substrate, and the second substrate 2 is a thin film transistor (TFT) substrate. The edges of the first substrate 1 and the second substrate 2 are bonded and fixed by a frame sealant 3, and the frame sealant 3 encloses a box-shaped space, and the box-shaped space is filled with liquid crystal 5. When the first substrate 1 and the second substrate 2 are aligned, the frame sealant 3 is used to seal the liquid crystal 5 filled between the first substrate 1 and the second substrate 2.

[0054] In a specific example, the frame sealant 3 can be applied to the edges of the first substrate 1, the liquid crystal 5 can be formed in the display area of ​​the second substrate 2, and then the cell assembly can be performed. However, the present invention is not limited to this, and the frame sealant 3 can also be applied to the edges of the second substrate 2, the liquid crystal 5 can be formed in the display area of ​​the first substrate 1, and then the cell assembly can be performed.

[0055] In one embodiment, the sealant 3 includes a first sealant 31 and a second sealant 32 disposed on the DPO side and the DP side of the display panel, and a third sealant 33 and a fourth sealant 34 disposed on the left and right sides of the display panel. The first sealant 31, the third sealant 33, the second sealant 32 and the fourth sealant 34 are connected end to end to enclose a closed box-shaped space between the first substrate 1 and the second substrate 2, and the liquid crystal 5 is sealed in the box-shaped space.

[0056] The DP side refers to the Data Pad side, i.e., the data binding side. Figure 4 The DPO side refers to the Data Pad Opposite side, that is, the side opposite to the data binding side, that is, Figure 4 The upper side of the .

[0057] In a specific example, on the DPO side of the display panel, the support column group is arranged in the display area 200. Based on the structure of the special-shaped screen, the relative distance between the upper edge of the support column group and the inner boundary of the frame sealant 3 gradually increases from the left side to the right side of the display panel (e.g. Figure 4 It should be noted that the inner boundary of the sealant 3 mentioned here refers to the side surface of the first sealant 31 close to the display area 200. In this embodiment, the relative distance between the upper edge of the support column group and the side surface of the first sealant 31 close to the display area 200 is 1.8mm-4.64mm.

[0058] The relative distance between the upper edge of the support column group and the surface of one side of the first sealant 31 close to the display area 200 is too large, and the relative distance has a certain fluctuation from the left to the right side of the display panel. There is no actual film support between the first sealant 31 and the support column group, and there is no physical support at the corresponding position between the first substrate 1 and the second substrate 2. The corresponding part of the first substrate 1 lacks support and is prone to bending and deformation, resulting in a decrease in the box thickness of the corresponding part, a decrease in the amount of liquid crystal, and blackening. According to research and analysis, in the prior art, as the relative distance between the support column group on the DPO side of the display panel and the inner boundary of the sealant increases, the box thickness at the corresponding position decreases more, and the blackening level is also higher.

[0059] Based on the above problems, in a specific example, Figure 3-5As shown, the display panel further includes a first colloidal structure 6 between the first sealant 31 and the support column group. The first colloidal structure 6 is disposed in the non-display area 300 between the first substrate 1 and the second substrate 2, and there is a certain gap between the first colloidal structure 6 and the display area 200. The first colloidal structure 6 is closely attached to a surface of one side of the first sealant 31 close to the support column group. The first colloidal structure 6 needs to ensure that there is no gap overlap with the sealant 3 to prevent the liquid crystal 5 from penetrating into the gap to refract and transmit light, thereby affecting the light leakage improvement effect.

[0060] In a specific example, the first colloidal structure 6 is located between the first substrate 1 and the second substrate 2, and is arranged on the DPO side of the display panel. It can provide support for the portion of the first substrate 1 corresponding to the first frame sealing glue 31 and the upper edge of the support column group to prevent the first substrate 1 from bending and deforming, resulting in blackening of the edge of the DPO side of the display panel.

[0061] In this embodiment, the height of the first colloidal structure 6 is between the height of the support column group after compression and the height of the sealant 3. Specifically, the height of the first colloidal structure 6 is greater than the height of the support column group after compression, and less than the height of the sealant 3. The first colloidal structure 6 is arranged between the first substrate 1 and the second substrate 2, and plays a role of buffer support. At the same time, it can effectively shorten the unsupported distance between the DPO side sealant 3 and the support column group, maintain the uniformity of the box thickness, and effectively improve the problem of blackening of the DPO side edge of the display panel.

[0062] In a specific example, the frame sealant 3 may be applied on the edges of the first substrate 1, and the first glue structure 6 may be applied on the side of the first frame sealant 31 close to the display area 2. However, the present invention is not limited thereto, and the frame sealant 3 may be applied on the edges of the second substrate 2, and the first glue structure 6 may be applied on the side of the first frame sealant 31 close to the display area 2.

[0063] The spacing between the first sealant 31 and the display area 200 determines the coating width d of the first colloidal structure 6. Specifically, the coating width d of the first colloidal structure 6 is less than L-15%D-△. Wherein, L is the relative distance between the surface of the first sealant 31 close to the display area 200 and the display area 200, D is the coating width of the first sealant 31, and △ represents the position accuracy of the fluctuation of the first sealant 31, which is generally 0.08 mm.

[0064] In this embodiment, the position accuracy of the first sealant 31 is △=0.08mm, the relative distance between the side surface of the first sealant 31 close to the display area 200 and the display area 200 is L=1.76±0.08mm, and the coating width of the first sealant 31 is D=0.1mm, and the coating width d of the first colloidal structure 6 is specifically 1.6±0.24mm. By coating the first colloidal structure 6 with a width d between the first sealant 31 and the display area 200, it can play a role of buffer support, and at the same time, it can effectively shorten the unsupported distance between the DPO side sealant 3 and the support column group, maintain the uniformity of the box thickness, and effectively improve the problem of blackening of the DPO side edge of the display panel.

[0065] In another embodiment, the edge of the support column group can also be set beyond the display area 200. At this time, the distance between the first frame sealant 31 and the upper edge of the support column group should be the same as the rule of the coating width of the first colloidal structure 6, that is, the distance between the first frame sealant 31 and the DPO side of the support column group is <L-15%D-△, so as to avoid the overlap of the first frame sealant 31 and the edge of the DPO side of the support column column, resulting in yellowing of the DPO side of the display panel. Among them, L is the relative distance between the surface of one side of the first frame sealant 31 close to the display area 200 and the display area 200, D is the coating width of the first frame sealant 31, and △ represents the position accuracy of the fluctuation of the first frame sealant 31, which is generally taken as 0.08mm. In a specific example, the distance between the first frame sealant 31 and the DPO side of the support column group is 0.212mm.

[0066] In a specific example, the frame sealant 3 and the first colloidal structure 6 include but are not limited to epoxy resin adhesives, which have the characteristics of strong adhesion, small shrinkage, and good weather resistance. In order to improve the supporting performance of the frame sealant 3 and the first colloidal structure 6, a plurality of first supporting balls (not shown) are doped in the frame sealant 3, and a plurality of second supporting balls (not shown) are doped in the first colloidal structure 6 to play the role of supporting the thickness of the box, so as to avoid the bending and deformation of the first substrate 1, which causes the DPO side of the display panel to turn black. Wherein, the first supporting balls and the second supporting balls include but are not limited to plastic balls.

[0067] Furthermore, considering that the support column group at the rear of the box will be partially compressed and the supporting and buffering effect of the first colloidal structure 6, the diameter of the second supporting sphere should be greater than or equal to the process height of the support column group, and less than or equal to the diameter of the first supporting sphere. In this embodiment, the diameter of the selected first supporting sphere is 4.6μm, and the diameter of the selected second supporting sphere is 3.8μm. And the mass fraction of the second supporting sphere in the first colloidal structure 6 can be 0.5% to 1.5%, for example, it can be 0.5%, 0.8%, 1%, 1.2%, 1.5%. Similarly, the mass fraction of the first supporting sphere in the frame sealing glue 3 can be 0.5% to 1.5%, for example, it can be 0.5%, 0.8%, 1%, 1.2%, 1.5%.

[0068] In one embodiment, the side of the first substrate 1 facing away from the second substrate 2 includes a color resist layer 7 , and the color resist layer 7 includes a plurality of color filters (RGB) arranged in an array.

[0069] When the shielding exposure process is adopted, the black matrix 8 on the DPO side of the display panel cannot completely cover the metal wires, and the metal wires will reflect the ambient light, and there is a risk of light leakage; when the exposure accuracy of the color resist layer 7 cannot completely cover the first 6 rows of color filters of the color resist layer 7 outside the display area 200, there is a partial lack of exposure of the color resist layer 7, resulting in poor exposure effect, and the closer to the edge of the DPO side of the display panel, the worse the exposure effect. Generally, it is necessary to increase the scanning signal through the circuit to maintain the display L0 state for light shielding, but it will cause the product energy consumption and driving pressure to be too high. In this embodiment, the first colloidal structure 6 is used to fill and cover the first 6 rows of color filters outside the display area 200, and the liquid crystal in this area is removed. Based on the vertical effect of the upper and lower POL polarization directions, the area does not need to be powered on to directly reach the equivalent L0 state, so there is no need to add a separate scanning signal to maintain the L0 state at the 6 rows, which can effectively reduce the product energy consumption and driving pressure. It should be noted that the first six rows of color filters of the color-resist layer 7 located outside the display area 200 refer to the six rows of color filters located between the first sealant 31 and the display area 200 .

[0070] In a specific example, the coating width of the first colloidal structure 6 is 1.6±0.24 mm. When the first colloidal structure 6 has a minimum coating width of 1.6 mm, it can at least cover 4.5 rows of color filters of the color resist layer 7 close to the first frame sealant 31. Since the two rows of color filters located outside the display area 200 are visually buffered from the display area 200, the impact is small, and even if they are not completely covered by the first colloidal structure 6, the exposure effect will not be affected.

[0071] In one embodiment, Figure 3-5As shown, the display panel further includes a second gel structure 9 located on the DPO side of the display panel. The second gel structure 9 is adhered and fixed to the side of the first sealant 31 away from the display area 200, and can cover the wiring port of the display panel to prevent water vapor from invading the box-shaped space and causing via corrosion and other trust problems. The second gel structure 9 is arranged between the first substrate 1 and the second substrate 2, and is closely adhered to the surface of the first sealant 31 on one side away from the first gel structure 6.

[0072] In order to improve the supporting and buffering effect of the second colloidal structure 9, a plurality of third supporting spheres (not shown) are doped into the second colloidal structure 9. Taking into account the partial compression of the supporting column group behind the box and the supporting and buffering effect of the first colloidal structure 6, the diameter of the second supporting sphere should be greater than or equal to the process height of the supporting column group, and less than or equal to the diameter of the first supporting sphere. In this embodiment, the diameter of the third supporting sphere is 4.6μm. The mass fraction of the third supporting sphere in the second colloidal structure 9 can be 0.5% to 1.5%, for example, 0.5%, 0.8%, 1%, 1.2%, 1.5%,

[0073] Another embodiment of the present invention provides a method for manufacturing a display panel, Figure 6 As shown, the following steps are included:

[0074] S10, applying a sealant 3 on the non-display area 300 of the first substrate 1;

[0075] S20, coating a second colloidal structure 9 on the DPO side of the first substrate 1, wherein the second colloidal structure 9 is located on a side of the frame sealant 3 away from the display area 200;

[0076] S30, coating a first colloidal structure 6 on the DPO side of the first substrate 1, wherein the first colloidal structure 6 is closely attached to a side of the frame sealant 3 close to the display area 200;

[0077] S40, dripping liquid crystal 5 onto the second substrate 2;

[0078] S50, aligning the first substrate 1 and the second substrate 2.

[0079] In one embodiment, the frame-sealing glue 3 is coated on the four edges of the first substrate 1 to seal the entire display panel and support the periphery, so it is applied first. The coating width of the frame-sealing glue 3 is 1.8 mm, and the frame-sealing glue 3 is doped with a plurality of first supporting spheres with a diameter of 0.46 μm.

[0080] In one embodiment, the second colloidal structure 9 is coated on a side surface of the first substrate 1 close to the second substrate 2, and can cover the exposed wiring vias to prevent water vapor from invading the box-shaped space and causing via corrosion and other reliability problems. In this embodiment, the coating width of the second colloidal structure 9 is 1.8 mm, and the second colloidal structure 9 is doped with a plurality of third supporting spheres with a diameter of 0.46 μm.

[0081] In one embodiment, the first colloidal structure 6 is coated on the side surface of the first substrate 1 close to the second substrate 2, and is used for the DPO side box thickness support transition to improve the light leakage problem. The coating width of the first colloidal structure 6 is d<L-15%D-△. Among them, the L is the relative distance between the side surface of the first sealant 31 close to the display area 200 and the display area 200, the D is the coating width of the first sealant 31, and △ represents the position accuracy of the fluctuation of the first sealant 31, which is generally taken as 0.08mm. In this embodiment, the coating width of the first colloidal structure 6 is 1.6mm, covering at least 4.5 rows of color filters between the display area 200 and the sealant 3 on the DPO side, and filling the corresponding area between the first substrate 1 and the second substrate 2, removing the liquid crystal in this area, based on the vertical effect of the upper and lower POL polarization directions, the area does not need to be powered on to directly reach the equivalent L0 state, so there is no need to add a separate scanning signal at the position to maintain the L0 state, which can effectively reduce the product energy consumption and driving pressure.

[0082] In this embodiment, the second colloid structure 9, the sealing glue 3 and the first colloid structure 6 are slightly covered with each other after being pressed together, which can prevent air or liquid crystal from penetrating into the gap to refract and transmit light, thereby affecting the light leakage improvement effect.

[0083] Another embodiment of the present invention provides a display device, including the display panel in the above embodiment. It should be noted that the display device in this embodiment can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator, etc.

[0084] The present invention provides a display panel and a manufacturing method thereof, and a display device, so as to solve the problem of blackening of the DPO side edge of a special-shaped product during partial exposure or cold cutting process. By filling a first colloid structure with a fixed width and height between the first frame sealant and the display area, and the height of the first colloid structure is between the height of the support column combined frame sealant after the box is aligned, so that the first glue frame can play a buffering and supporting role on the DPO side for the area between the support column group and the frame sealant; in order to meet the design requirements of the special-shaped screen, on the DPO side of the display panel, the distance between the edge of the support column group and the inner edge of the frame sealant gradually increases from the left side to the right side, and the design of the first colloid structure can effectively shorten the unsupported distance between the frame sealant and the support column group, avoid the box thickness reduction of the corresponding area caused by the bending deformation of the first substrate, maintain the uniformity of the box thickness, effectively improve the problem of blackening of the DPO side edge, and no additional mask plate change investment is required, saving processing costs, and greatly improving the designability of special-shaped cold cutting products. The first colloid structure is closely attached to the frame sealant, which can prevent the liquid crystal from penetrating into the gap to refract and transmit light, and produce an exposure gray area. The first colloidal structure is used to fill the first 6 rows of color filter positions outside the display area, and the liquid crystal in the corresponding area is removed. Based on the vertical effect of the upper and lower POL polarization directions, the equivalent L0 state is reached without power-on. There is no need to add additional scanning signals to the 6 rows to maintain the display L0 state, which can effectively reduce product energy consumption and driving pressure.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A display panel, characterized in that: include: A first substrate and a second substrate arranged opposite to each other, a frame sealant arranged in a non-display area between the first substrate and the second substrate, and a support column group located in a display area of ​​the first substrate; The edges of the first substrate and the second substrate are bonded and fixed by the frame-sealing adhesive, and the frame-sealing adhesive encloses to form a box-shaped space, and the box-shaped space is filled with liquid crystal; The frame sealant includes a first frame sealant arranged on the data binding side opposite to the display panel, a second frame sealant arranged on the data binding side of the display panel, and a third frame sealant and a fourth frame sealant arranged on the left and right sides of the display panel; The display panel further includes a first colloid structure located between the first substrate and the second substrate, the first colloid structure being located between the first frame sealant and the display area and closely attached to a surface of one side of the first frame sealant close to the support column group; The side of the first substrate facing away from the second substrate includes a color resist layer, and the color resist layer includes a plurality of color filters arranged in an array; The first colloidal structure at least covers 4.5 rows of color filters of the color resist layer close to the first frame sealant; The width of the first colloidal structure d<L-15%D-△; in L is the distance between the surface of the first frame sealant close to the display area and the display area; The D is the width of the first sealant; The △ is the position accuracy of the first frame sealing glue fluctuation.

2. The display panel according to claim 1, characterized in that: The width of the first colloidal structure is 1.6±0.24 mm.

3. The display panel according to claim 1, characterized in that: The frame sealing glue is doped with a plurality of first supporting balls; A plurality of second supporting spheres are doped in the first colloidal structure.

4. The display panel according to claim 3, characterized in that: The diameter of the second supporting sphere is smaller than the diameter of the first supporting sphere, and the diameter of the second supporting sphere is greater than the process height of the supporting column group.

5. The display panel according to claim 3, characterized in that: The diameter of the second supporting sphere is 3.8 μm.

6. The display panel according to claim 1, characterized in that: The height of the first colloid structure is greater than the height of the support column group after the first substrate and the second substrate are assembled into a box, and is less than the height of the frame sealing glue.

7. The display panel according to claim 1, characterized in that: On the opposite side of the display panel to the data binding, the relative distance between the support column group and the inner boundary of the frame sealant gradually increases from the left side to the right side.

8. The display panel according to claim 1, characterized in that: The display panel further includes a second glue structure located on the side of the display panel opposite to the data binding, and the second glue structure is adhered and fixed to a side of the first frame sealing glue away from the display area.

9. A method for manufacturing a display panel as claimed in claim 1, characterized in that: include: Applying a sealing glue on the non-display area of ​​the first substrate; Coating a second colloid structure on the data binding side of the first substrate, wherein the second colloid structure is located on a side of the frame sealant away from the display area; Applying a first colloidal structure on the data binding side of the first substrate, wherein the first colloidal structure is closely attached to a side of the frame sealant close to the display area; Dropping liquid crystal on the second substrate; The first substrate and the second substrate are aligned with each other.

10. A display device, characterized in that: Comprising the display panel as described in any one of claims 1-8.

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