Patent ID: 12204189

Elements in the drawings are designated by reference numerals listed below.100: spliced display device;200: display device;1: LCD display panel;2: pad unit;3: conductive unit;4: mini-LED;5: insulating unit;6: anisotropic conductive adhesive film;7: mold;8: solder paste;101: display area;102: bezel area;11: array substrate;12: color filter substrate;13: liquid crystal layer;14: first polarizer;15: second polarizer; and16: sealant.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The preferred embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The specific embodiments described with reference to the attached drawings are all exemplary and are intended to illustrate and interpret the present disclosure to make the skilled in the art easier to understand how to implement the present disclosure. The disclosure herein provides many different embodiments or examples for realizing different structures of the present disclosure. They are only examples and are not intended to limit the present disclosure.

In the description of the present disclosure, it should be understood that terms such as “upper,” “lower,” “front,” “rear,” “left,” “right,” “inside,” “outside,” “side,” as well as derivative thereof should be construed to refer to the orientation as described or as shown in the drawings under discussion. These relative terms are for convenience of description, do not require that the present disclosure be constructed or operated in a particular orientation, and shall not be construed as causing limitations to the present disclosure.

In the accompanying drawings, wherein the identical or similar reference numerals constantly denote the identical or similar elements or elements having the identical or similar functions. In the drawings, structurally identical components are denoted by the same reference numerals, and structural or functionally similar components are denoted by like reference numerals. Moreover, a size and a thickness of each component shown in the drawings are arbitrarily shown for ease of understanding and description, and the present disclosure does not limit the size and thickness of each component.

As shown inFIG.1, the present disclosure provides a spliced display device100. The spliced display device100includes a plurality of display devices200that are spliced to each other.

Embodiment 1

As shown inFIG.2, a display device200of this embodiment includes an LCD display panel1, a plurality of pad units2, a plurality of conductive units3, a plurality of mini-LEDs4, and a plurality of insulating units5.

In the display device of this embodiment, the mini-LEDs4are manufactured in a bezel area102of the LCD display panel1to allow the bezel area102of the LCD display panel1which does not emit light and display originally to display by the mini-LEDs4, thereby improving a screen ratio of the display device200, further eliminating seams between display areas101of two adjacent LCD display panels1of the spliced display device100, and improving product competitiveness of the spliced display device100.

As shown inFIG.2, the LCD display panel1is defined with the display area101and the bezel area102.

Wherein, the LCD display panel1includes an array substrate11, a color filter substrate12, a liquid crystal layer13, a first polarizer14, a second polarizer15, and a sealant16.

Wherein, the array substrate11is disposed in the display area101and the bezel area102. The array substrate11includes film layer structures such as a first substrate, a thin film transistor layer, and a first electrode.

Wherein, the color filter substrate12is disposed opposite to the array substrate11, and the color filter substrate12is disposed in the display area101and the bezel area102. The color filter substrate12includes film layer structures such as a second substrate, a color filter, a black matrix, and a second electrode.

Wherein, the liquid crystal layer13is disposed between the array substrate11and the color filter substrate12, and is located in the display area101.

The first polarizer14is disposed on one side of the array substrate11away from the color filter substrate12, and is located in the display area101and the bezel area102. A structure of the first polarizer14includes two layers of triacetyl cellulose (TAC) and one polyvinyl alcohol (PVA) layer disposed between the two layers of TAC. It is the PVA layer that plays the role of polarization, but PVA is easily hydrolyzed. In order to protect physical properties of polarizers, it is necessary to laminate one TAC film having high light transmittances, good water resistances, and certain mechanical strengths on both sides of the PVA layer for protection.

The second polarizer15is disposed on one side of the color filter substrate12away from the array substrate11, and is located in the display area101. A structure of the second polarizer15includes two layers of triacetyl cellulose (TAC) and one polyvinyl alcohol (PVA) layer disposed between the two layers of TAC. It is the PVA layer that plays the role of polarization, but PVA is easily hydrolyzed. In order to protect physical properties of polarizers, it is necessary to laminate one TAC film having high light transmittances, good water resistances, and certain mechanical strengths on both sides of the PVA layer for protection.

The sealant16is disposed between the array substrate11and the color filter substrate12, surrounds the liquid crystal layer13, and is located in the bezel area102.

The pad units2are disposed spaced apart from each other in the bezel area102of the LCD display panel1. In this embodiment, the pad units2are disposed spaced apart from each other on one side of the color filter substrate12away from the array substrate11.

The conductive units3are disposed spaced apart from each other on one side of the pad units2away from the LCD display panel1. In this embodiment, the conductive units3are disposed spaced apart from each other on one side of the pad units2away from the color filter substrate12. The conductive units3are correspondingly electrically connected to the pad units2by one to one. In this embodiment, a material of the conductive units3is an anisotropic conductive adhesive (ACF). A thickness of the conductive units3ranges from 30 um to 60 um. Therefore, electrical connections between the pad units2and the mini-LEDs4can be well realized.

The mini-LEDs4are disposed spaced apart from each other on one side of the conductive units3away from the LCD display panel1. Each of the mini-LEDs4includes two connecting ends41. The connecting ends41are correspondingly electrically connected to the conductive units3by one to one.

The insulating units5are disposed interlaced with the conductive units3. In this embodiment, a material of the insulating units5is same as that of the conductive units3.

As shown inFIGS.3and4, a manufacturing method of the display device is further provided in this embodiment, which includes following steps: S1: providing the LCD display panel1including the display area101and the bezel area102; and S2: manufacturing the plurality of pad units2that are spaced apart from each other in the bezel area102of the LCD display panel1.

As shown inFIGS.3and5, the manufacturing method of the display device in this embodiment also includes a step of S3: attaching an anisotropic conductive adhesive film6onto one side of the pad units2away from the LCD display panel1, wherein, the anisotropic conductive adhesive film6covers the LCD display panel1between adjacent pad units2.

As shown inFIGS.3and6, the manufacturing method of the display device in this embodiment also includes a step of S4: disposing the mini-LEDs4that are spaced apart from each other on one side of the anisotropic conductive adhesive film6away from the LCD display panel1, wherein, each of the mini-LEDs4is disposed corresponding to two adjacent pad units2.

As shown inFIGS.3and7, the manufacturing method of the display device in this embodiment also includes a step of S5: melting the anisotropic conductive adhesive film6corresponding to the pad units2by hot pressing to form the conductive units3that are spaced apart from each other. Parts of the anisotropic conductive adhesive film6which do not correspond to the pad units2form the insulating units5disposed interlaced with the conductive units3. The conductive units3correspond to the pad units2by one to one.

Specifically, the anisotropic conductive adhesive film6is heated with a mold7to melt the anisotropic conductive adhesive film6, and the mold7is used to squeeze the mini-LEDs4and the pad units2to allow the mini-LEDs4and the pad units2to be tightly bonded. After hot pressing, insulating shells of parts of the anisotropic conductive adhesive film6corresponding to the pad units2will be broken to expose internal metal conductive particles, thereby realizing electrical conduction and realizing electrical connections between the pad units2and the mini-LEDs4. Insulating shells of parts of the anisotropic conductive adhesive film6which do not correspond to the pad units2will not be broken, thereby being unable to conduct electricity, which form the insulating units5.

Since hot pressing can heat locally, the LCD display panel1will not be heated together. Therefore, a ghosting phenomenon when solder pastes are printed in current technology can be prevented, malfunction of the liquid crystal layer13, the first polarizer14, and the second polarizer15of the LCD display panel1caused by reflow soldering in current technology can be prevented, and thereby preventing the display effect of the LCD display panel1from being affected.

Embodiment 2

As shown inFIG.8, the display device200of this embodiment includes the LCD display panel1, the plurality of pad units2, the plurality of conductive units3, and the plurality of mini-LEDs4.

In the display device of this embodiment, the mini-LEDs4are manufactured in the bezel area102of the LCD display panel1to allow the bezel area102of the LCD display panel1which does not emit light and display originally to display by the mini-LEDs4, thereby improving the screen ratio of the display device200, further eliminating the seams between the display areas101of the two adjacent LCD display panels1of the spliced display device100, and improving product competitiveness of the spliced display device100.

As shown inFIG.8, the LCD display panel1is defined with the display area101and the bezel area102.

Wherein, the LCD display panel1includes the array substrate11, the color filter substrate12, the liquid crystal layer13, the first polarizer14, the second polarizer15, and the sealant16.

Wherein, the array substrate11is disposed in the display area101and the bezel area102. The array substrate11includes film layer structures such as the first substrate, the thin film transistor layer, and the first electrode.

Wherein, the color filter substrate12is disposed opposite to the array substrate11, and the color filter substrate12is disposed in the display area101and the bezel area102. The color filter substrate12includes film layer structures such as the second substrate, the color filter, the black matrix, and the second electrode.

Wherein, the liquid crystal layer13is disposed between the array substrate11and the color filter substrate12, and is located in the display area101.

The first polarizer14is disposed on one side of the array substrate11away from the color filter substrate12, and is located in the display area101and the bezel area102. The structure of the first polarizer14includes two layers of triacetyl cellulose (TAC) and one polyvinyl alcohol (PVA) layer disposed between the two layers of TAC. It is the PVA layer that plays the role of polarization, but PVA is easily hydrolyzed. In order to protect physical properties of polarizers, it is necessary to laminate one TAC film having high light transmittances, good water resistances, and certain mechanical strengths on both sides of the PVA layer for protection.

The second polarizer15is disposed on one side of the color filter substrate12away from the array substrate11, and is located in the display area101. The structure of the second polarizer15includes two layers of triacetyl cellulose (TAC) and one polyvinyl alcohol (PVA) layer disposed between the two layers of TAC. It is the PVA layer that plays the role of polarization, but PVA is easily hydrolyzed. In order to protect physical properties of polarizers, it is necessary to laminate one TAC film having high light transmittances, good water resistances, and certain mechanical strengths on both sides of the PVA layer for protection.

The sealant16is disposed between the array substrate11and the color filter substrate12, surrounds the liquid crystal layer13, and is located in the bezel area102.

The pad units2are disposed spaced apart from each other in the bezel area102of the LCD display panel1. In this embodiment, the pad units2are disposed spaced apart from each other on one side of the color filter substrate12away from the array substrate11.

The conductive units3are disposed spaced apart from each other on one side of the pad units2away from the LCD display panel1. In this embodiment, the conductive units3are disposed spaced apart from each other on one side of the pad units2away from the color filter substrate12. The conductive units3are correspondingly electrically connected to the pad units2by one to one. wherein, the material of the conductive units3is a solder paste. The thickness of the conductive units3ranges from 30 um to 60 um. Therefore, electrical connections between the pad units2and the mini-LEDs4can be well realized.

The mini-LEDs4are disposed spaced apart from each other on one side of the conductive units3away from the LCD display panel1. Each of the mini-LEDs4includes two connecting ends41. The connecting ends41are correspondingly electrically connected to the conductive units3by one to one.

As shown inFIGS.4and9, the manufacturing method of the display device is further provided in this embodiment, which includes following steps: S1: providing the LCD display panel1including the display area101and the bezel area102; and S2: manufacturing the plurality of pad units2that are spaced apart from each other in the bezel area102of the LCD display panel1.

As shown inFIGS.9and10, the manufacturing method of the display device in this embodiment also includes a step of S3: printing solder pastes8on the side of the pad units2away from the LCD display panel1by inkjet printing, wherein, the solder pastes8correspond to the pad units2by one to one.

As shown inFIGS.9and11, the manufacturing method of the display device in this embodiment also includes a step of S4: disposing the mini-LEDs4that are spaced apart from each other on one side of the solder pastes8away from the LCD display panel1, wherein, each of the mini-LEDs4is disposed corresponding to two adjacent pad units2.

As shown inFIGS.9and12, the manufacturing method of the display device in this embodiment also includes a step of S5: melting the solder pastes8between the pad units2and the mini-LEDs4by laser heating to form the conductive units3that are spaced apart from each other.

Since laser heating can heat locally, the LCD display panel1will not be heated together. Therefore, the ghosting phenomenon when the solder pastes are printed in current technology can be prevented, malfunction of the liquid crystal layer13, the first polarizer14, and the second polarizer15of the LCD display panel1caused by reflow soldering in current technology can be prevented, and thereby preventing the display effect of the LCD display panel1from being affected.

The manufacturing method of the display device, the display device, and the spliced display device provided by the embodiments of the present disclosure are described in detail above. Specific examples are used herein to explain the principles and implementation of the present disclosure. The descriptions of the above embodiments are only used to help understand the method of the present disclosure and its core ideas; meanwhile, for those skilled in the art, the range of specific implementation and application may be changed according to the ideas of the present disclosure. In summary, the content of the specification should not be construed as causing limitations to the present disclosure.