TWI764794B - Display device - Google Patents

Abstract

A display device, having a display area and a periphery area, includes a first substrate, a cover plate, a pattern layer and an adhesive layer. The cover plate is disposed on the first substrate at the periphery area. The pattern layer is between the cover plate and the first substrate, and the adhesive layer is between the pattern layer and the first substrate.

Description

display device

The present invention relates to a display device, and more particularly, to a display device having a trademark pattern integrated on the display surface.

With the diversified development of display technology, the development of the appearance of the display is mainly towards the design of narrow frame and full plane, so as to present a concise visual appearance. However, due to the limitation of the appearance of the display and the structure of the module, the LOGO of each brand can only be presented in the way of external pendant or decorative sheet printing, and cannot have the LOGO integrated on the display surface.

The present invention provides a display device with a trademark pattern integrated on the display surface.

An embodiment of the present invention provides a display device, which has a display area and a peripheral area, and includes: a first substrate; a cover plate, located on the first substrate and located in the peripheral area; a pattern layer, located between the cover plate and the first substrate and an adhesive layer, located between the pattern layer and the first substrate.

In an embodiment of the present invention, the above-mentioned cover plate extends in a direction away from the display area and protrudes from the first substrate.

In an embodiment of the present invention, the above-mentioned display device further includes a chip-on-chip film located between the adhesive layer and the first substrate.

In an embodiment of the present invention, the above-mentioned display device further includes a background layer located between the pattern layer and the adhesive layer.

In an embodiment of the present invention, the above-mentioned display device further includes a light source located between the adhesive layer and the first substrate.

In an embodiment of the present invention, the above-mentioned display device further includes a second substrate located on the first substrate, and the adhesive layer encapsulates the first substrate and the second substrate.

In an embodiment of the present invention, the above-mentioned cover plate partially overlaps the second substrate.

In an embodiment of the present invention, the above-mentioned pattern layer partially overlaps the second substrate.

In an embodiment of the present invention, the above-mentioned pattern layer does not overlap the second substrate.

In an embodiment of the present invention, the above-mentioned display device further includes a first polarizer, which is located in the display area, and the second substrate is located between the first polarizer and the first substrate.

In an embodiment of the present invention, a side of the cover plate facing away from the first substrate is coplanar with a side of the first polarizer facing away from the first substrate.

In an embodiment of the present invention, the total thickness of the cover plate and the pattern layer is not greater than the thickness of the first polarizer.

In an embodiment of the present invention, the above-mentioned pattern layer includes a thermochromic material, a light-transmitting material, a luminescent material or a light-reflecting material.

In an embodiment of the present invention, the above-mentioned adhesive layer includes a thermally conductive adhesive.

In an embodiment of the present invention, the width of the pattern layer is 16-83% of the width of the cover plate.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

FIG. 1A is a schematic partial top view of a display device 10 according to an embodiment of the present invention. Fig. 1B is a schematic cross-sectional view taken along the section line B-B' of Fig. 1A. In order to simplify the expression of the drawings, FIG. 1A schematically illustrates the display area AA, the non-display area NA, the cover plate CV and the pattern layer PT of the display device 10 , and other components are omitted.

1A and 1B at the same time, the display device 10 has a display area AA and a peripheral area NA, and includes a substrate S1 , a cover plate CV, a pattern layer PT and an adhesive layer AH. The cover plate CV is located on the substrate S1 and is located in the peripheral area NA. The pattern layer PT is located between the cover plate CV and the substrate S1, and the adhesive layer AH is located between the pattern layer PT and the substrate S1.

Based on the above, in the display device 10 of an embodiment of the present invention, the trademark pattern is presented by the pattern layer PT disposed between the cover plate CV and the substrate S1, so that the display device 10 can have the trademark pattern integrated on the display surface .

Hereinafter, the embodiments of each element of the display device 10 will be continuously described with reference to the drawings. Referring to FIG. 1A , the peripheral area NA of the display device 10 is adjacent to the display area AA. For example, in this embodiment, the peripheral area NA may be located at the lower side of the display area AA, but not limited thereto. In other embodiments, the peripheral area NA may be located on the upper side, the left side or the right side of the display area AA.

In this embodiment, the cover plate CV may be located on the display surface of the display device 10 , that is, the surface on which the image is displayed. The cover plate CV may have light transmittance, for example, in order to display the pattern of the pattern layer PT. The material of the cover plate CV may include a light-transmitting material, such as polyethylene terephthalate (PET) or polyimide. The pattern layer PT can be disposed on the surface of the cover plate CV away from the display surface, and the cover plate CV and the pattern layer PT can be fixed on the substrate S1 by the adhesive layer AH.

The pattern layer PT may include a thermochromic material, a light-transmitting material, a luminescent material or a light-reflecting material. For example, in this embodiment, the pattern layer PT may include a trademark pattern made of a luminescent material, and the pattern layer PT may be provided with an independent power control circuit to allow setting of the lighting situation of the pattern layer PT. For example, the pattern layer PT can be set to emit light when the display device 10 is powered on, so that the display device 10 can display the trademark pattern of the pattern layer PT when the display device 10 is powered on, and vice versa. In this way, the display device 10 can display the trademark pattern on the display surface.

In some embodiments, the pattern layer PT may include a logo pattern made of a reflective material (eg, electroplated coating or metal), so that a viewer can watch the display when an external light source illuminates the logo pattern of the pattern layer PT Device 10 logotype.

In some embodiments, the display device 10 may further include a chip on film CF, the chip on film CF may be located between the adhesive layer AH and the substrate S1, and the chip on film CF may be directed away from the display area AA It is extended and bent to the back side of the substrate S1, and a chip can be disposed on the chip on film CF located on the back side of the substrate S1. For example, a plurality of pins can be disposed on the chip-on film CF, one end of the pins is electrically connected to the chip on the chip-on film CF, and the other end of the pins can be connected to the chip by conductive glue or other conductive materials. The pads on the substrate S1 are bonded. Therefore, the cover plate CV can be extended in a direction away from the display area AA to protrude from the substrate S1 to shield the chip on film CF.

In the display area AA, the substrate S1 may include a driving circuit for driving the display elements. For example, in this embodiment, the substrate S1 may be a circuit substrate, and an active driving circuit such as a two-transistor single capacitor (2T1C) may be provided on the substrate S1, and the above-mentioned active driving circuit may pass through the The pads PD1 and PD2 are electrically connected to the display element.

In this embodiment, the display device 10 may further include a display element layer DA located on the substrate S1, and the display element layer DA may include a plurality of display elements, such as pixel array elements for displaying images. For example, referring to FIG. 1B , the display element layer DA may include a plurality of light emitting elements LD, such as micro light emitting diodes (Micro-LEDs), but not limited thereto. The active driving circuit on the substrate S1 can be electrically connected to the cathode E1 and the anode E2 of each light-emitting element LD through pads PD1 and PD2 respectively, so as to control the operation of the individual light-emitting element LD during the image display process of the display device 10 . In addition, the pattern layer PT may not overlap the display element layer DA, and the adhesive layer AH may also encapsulate the display element layer DA and the substrate S1. The material of the adhesive layer AH is, for example, UV curable adhesive (eg Tuffy adhesive), moisture-absorbing curable adhesive (eg PUR adhesive), hot melt adhesive, silicone adhesive, AB adhesive, thermally conductive tape, or a combination thereof.

In some embodiments, the display element layer DA may further include a color filter layer CT, and the color filter layer CT may be correspondingly disposed on the light-emitting element LD. In this way, the light emitted by the light-emitting element LD can pass through the color filter layer. The CT is converted into light of different colors, so that the display device 10 can realize a full-color display effect. In addition, a black matrix BM can also be arranged between the color filter layers CT to improve the color contrast.

In some embodiments, the display device 10 may further include an anti-reflection and anti-glare film AG on the display element layer DA, for example, the anti-reflection and anti-glare film AG includes a plurality of surface microstructures and anti-reflection films coated on the surface microstructures The film is used to adjust the overall reflectivity, anti-glare performance and surface flatness of the display device 10 under ambient light irradiation. In some embodiments, the total thickness of the cover plate CV and the pattern layer PT may be approximately equal to the thickness of the anti-reflection and anti-glare film AG. In this way, the side of the cover plate CV facing away from the substrate S1 can interact with the anti-reflection and anti-glare film AG. The side of the AG facing away from the substrate S1 is coplanar, so that the display device 10 can present images and trademark patterns in a full-plane manner, thereby having a full-plane appearance.

Hereinafter, other embodiments of the present invention will continue to be described with reference to FIGS. 2 to 4 , and the element numbers and related contents of the embodiments of FIGS. 1A to 1B will be used, wherein the same reference numbers are used to represent the same or similar elements, and The description of the same technical content is omitted. For the description of the omitted part, reference may be made to the embodiments of FIGS. 1A to 1B , which will not be repeated in the following description.

FIG. 2 is a schematic cross-sectional view of a display device 20 according to an embodiment of the present invention. The display device 20 has a display area AA and a peripheral area NA, and includes a substrate S1, a cover plate CV, a pattern layer PT, an adhesive layer AH, and a chip on film CF, wherein the pattern layer PT is located between the cover plate CV and the substrate S1, and the adhesive layer AH is located between the pattern layer PT and the substrate S1, the chip on film CF is located between the adhesive layer AH and the substrate S1, and the cover plate CV, the pattern layer PT, the adhesive layer AH and the chip on film CF are all located in the peripheral area NA.

In this embodiment, the display device 20 may further include a background layer BL, the background layer BL may be located between the pattern layer PT and the adhesive layer AH, and the material of the background layer BL may be, for example, ink or paint. In addition, the pattern layer PT may include a trademark pattern made of a thermochromic material, and the above thermochromic material may exhibit any color different from the background layer BL at room temperature, such as white or imitation metallic color. After being heated up, the thermochromic material of the pattern layer PT can become the same color as the background layer BL, such as black or gradient texture. At the same time, the adhesive layer AH may include thermally conductive adhesive, so that when the display device 20 is turned on, the thermally conductive adhesive of the adhesive layer AH can transfer the heat generated by the display device 20 to the pattern layer PT, so that the pattern layer PT heats up and appears with the background. If the layers BL are of the same color, the display surface of the display device 20 may appear black as a whole, or the cover plate CV may have a gradient pattern as a whole, and the viewer cannot see the trademark pattern. On the other hand, when the display device 20 is turned off, the thermally conductive adhesive of the adhesive layer AH is not heated, and the thermochromic material of the pattern layer PT can present white or imitation metallic color at room temperature, so the display surface of the display device 20 can display Logo graphic in white or faux metallic.

In this embodiment, the substrate S1 may be a thin film transistor array (TFT array) substrate, and the display device 20 may further include a substrate S2 located on the substrate S1, such as a color filter substrate, and the substrate S2 may further include a black Matrix BM. In addition, a liquid crystal layer (not shown) may be sandwiched between the substrate S1 and the substrate S2, and the adhesive layer AH may encapsulate the substrate S1, the substrate S2 and the liquid crystal layer therebetween.

In this embodiment, the display device 20 may further include a polarizer P1 and a polarizer P2 located in the display area AA, wherein the substrate S2 may be located between the polarizer P1 and the cover plate CV and the substrate S1, and the substrate S1 and the substrate S2 may be between the polarizer P1 and the polarizer P2. In addition, the total thickness of the cover plate CV and the pattern layer PT is not greater than the thickness of the polarizer P1. For example, the thickness of the polarizer P1 can be approximately equal to the total thickness of the cover plate CV, the pattern layer PT and the background layer BL. Therefore, the side of the cover plate CV facing away from the substrate S1 can be coplanar with the side of the polarizer P1 facing away from the substrate S1 , so that the display device 20 can display images and trademark patterns in a full-plane manner.

The pattern layer PT may partially overlap or not overlap the substrate S2. For example, in this embodiment, the pattern layer PT may partially overlap the substrate S2. The total width of the cover plate CV may be equal to the sum of the width W1 partially overlapping the substrate S2, the width W2 overlapping the adhesive layer AH, and the width W3 protruding from the substrate S1, and the pattern layer PT may have a width W4. Considering the actual process capability, the width W4 of the pattern layer PT can account for 16% to 83% of the width of the cover plate CV, that is, 16%≦W4/(W1+W2+W3)≦83%, and can be determined as required The size of the pattern layer PT determines the proportional relationship between the width of the pattern layer PT and the width of the cover plate CV. For example, in this embodiment, the overlapping width W1 of the cover plate CV and the substrate S2 may be about 0.5 cm, the overlapping width W2 of the cover plate CV and the adhesive layer AH may be about 1.5 cm, and the cover plate CV protrudes from the substrate. The width W3 of S1 may be about 1 cm, and the width W4 of the pattern layer PT may be about 2.5 cm. Therefore, W4/(W1+W2+W3) may be about 83%.

FIG. 3 is a schematic cross-sectional view of a display device 30 according to an embodiment of the present invention. The display device 30 has a display area AA and a peripheral area NA, and includes a substrate S1, a substrate S2, a cover plate CV, a pattern layer PT, a background layer BL, an adhesive layer AH, a chip on film CF, a polarizer P1, and a polarizer P2, wherein The cover plate CV, the pattern layer PT, the background layer BL, the adhesive layer AH and the chip on film CF are all located in the peripheral region NA.

Compared with the display device 20 shown in FIG. 2, the structure of the display device 30 shown in FIG. 3 is different in that: the pattern layer PT does not overlap the substrate S2, and the display device 30 further includes a light source LS, which can be between the adhesive layer AH and the substrate S1.

In this embodiment, the central axis CL of the pattern layer PT may overlap with the central axis of the part of the chip on film CF located on the substrate S1, that is, the part of the pattern layer PT and the part of the chip on film CF located on the substrate S1 may have The same central axis CL. The pattern layer PT may include a trademark pattern made of a light-transmitting material (eg, Acrylic), and the background layer BL may have openings overlapping the light sources LS. In this way, the light from the light source LS can penetrate the pattern layer PT through the opening of the background layer BL, so that the viewer can view the trademark pattern of the pattern layer PT, and the display device 30 can present the image and the trademark in a full-plane manner. pattern. In addition, the light source LS can be provided with an independent power control circuit, so that the user can set the context of turning on or off the light source LS as required, and then determine the context of displaying the trademark pattern of the pattern layer PT. For example, the light source LS can be set to emit light when the display device 30 is turned off, so that the display device 30 can display the trademark pattern of the pattern layer PT when the display device 30 is turned off, and vice versa.

In this embodiment, the overlapping width W1 of the cover plate CV and the substrate S2 may be about 0.5 cm, the overlapping width W2 of the cover plate CV and the adhesive layer AH may be about 1.5 cm, and the cover plate CV protrudes beyond the width W3 of the substrate S1 It may be about 1 cm, and the width W5 of the pattern layer PT may be approximately the width W2, that is, about 1.5 cm. Therefore, W4/(W1+W2+W3) may be about 50%.

FIG. 4 is a schematic perspective view of a display device 40 according to an embodiment of the present invention. The display device 40 has a display area AA and a peripheral area NA, and includes a substrate S1, a cover plate CV, a pattern layer PT, a background layer BL, and an adhesive layer AH, wherein the pattern layer PT and the background layer BL are disposed on the cover plate CV and cover The plate CV, the pattern layer PT and the background layer BL can be fixed on the substrate S1 by the adhesive layer AH, and the cover plate CV, the pattern layer PT, the background layer BL and the adhesive layer AH are all located in the peripheral area NA.

In this embodiment, the substrate S1 may be a printed circuit backplane, and the display device 40 may further include a substrate S2 on the substrate S1, such as a driving circuit substrate, and the cover plate CV, the pattern layer PT and the background layer BL may be The substrate S2 is partially overlapped.

The display device 40 may further include a display element layer DB on the substrate S2, and the display element layer DB may include a pixel array element for displaying images. For example, referring to FIG. 4 , the display element layer DB may include a plurality of light emitting elements OD, such as organic light emitting diodes (OLEDs), but not limited thereto. The light-emitting element OD may include an anode AN, a cathode CA, and a light-emitting layer EM, and the light-emitting layer EM is located between the anode AN and the cathode CA. The driving circuit on the substrate S2 can be electrically connected to the anode AN and the cathode CA of each light-emitting element OD, so as to control the light-emitting layer EM of the light-emitting element OD to emit light during the image display process of the display device 40 .

In some embodiments, the display element layer DB may further include a color filter layer CT, and the light emitted by the light-emitting layer EM of the light-emitting element OD can be converted into light of different colors through the color filter layer CT, so that the display device 40 can achieve full Colorized display effect.

In this embodiment, the display device 40 may further include a protective layer PC, wherein the total thickness of the cover plate CV, the pattern layer PT and the background layer BL may be approximately equal to the total thickness of the display element layer DB and the protective layer PC. In this way, the side of the cover plate CV facing away from the substrate S1 can be coplanar with the side of the protective layer PC facing away from the substrate S1, so that the display surface of the display device 40 can present images and images in the pattern layer PT in a full-plane manner. Logo pattern.

To sum up, the display device of the present invention presents the trademark pattern through the pattern layer disposed between the cover plate and the substrate in the peripheral area, so that the display device can have the trademark pattern integrated on the display surface. In addition, by making the cover plate coplanar with the anti-reflection and anti-glare film, polarizing plate or protective layer disposed in the display area, the display device can present images and trademark patterns in a full-plane manner, thereby having a full-plane appearance.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the appended patent application.

10, 20, 30, 40: Display device AA: display area AG: anti-reflection anti-glare film AH: Adhesive layer AN: anode B-B': hatch line BL: Background layer BM: black matrix CA: Cathode CF: Chip On Film CL: Center axis CT: color filter layer CV: Cover DA, DB: Display element layer E1: Cathode E2: Anode EM: emissive layer LD: Light-emitting element LS: light source NA: non-display area OD: light-emitting element P1, P2: polarizer PC: protective layer PD1, PD2: pads PT: pattern layer S1, S2: substrate W1, W2, W3, W4, W5: Width

FIG. 1A is a schematic partial top view of a display device 10 according to an embodiment of the present invention. Fig. 1B is a schematic cross-sectional view taken along the section line B-B' of Fig. 1A. FIG. 2 is a schematic cross-sectional view of a display device 20 according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of a display device 30 according to an embodiment of the present invention. FIG. 4 is a schematic perspective view of a display device 40 according to an embodiment of the present invention.

20: Display device

AA: display area

AH: Adhesive layer

BL: Background layer

BM: black matrix

CF: Chip On Film

CV: Cover

NA: non-display area

P1, P2: polarizer

PT: pattern layer

S1, S2: substrate

W1, W2, W3, W4: Width

Claims (14)

A display device has a display area and a peripheral area, and includes: a first substrate; a cover plate, located on the first substrate and located in the peripheral area; a pattern layer, located on the cover plate and the first substrate an adhesive layer, located between the pattern layer and the first substrate; and a background layer, located between the pattern layer and the adhesive layer. A display device has a display area and a peripheral area, and includes: a first substrate; a cover plate, located on the first substrate and located in the peripheral area; a pattern layer, located on the cover plate and the first substrate an adhesive layer, located between the pattern layer and the first substrate; and a light source, located between the adhesive layer and the first substrate. The display device according to claim 1 or 2, wherein the cover plate extends in a direction away from the display area and protrudes from the first substrate. The display device according to claim 1 or 2, further comprising a chip-on-film located between the adhesive layer and the first substrate. The display device according to claim 1 or 2, wherein the pattern layer comprises a thermochromic material, a light-transmitting material, a luminescent material or a reflective material. The display device according to claim 1 or 2, wherein the adhesive layer comprises a thermally conductive adhesive. The display device according to claim 1 or 2, wherein the width of the pattern layer is 16-83% of the width of the cover plate. A display device has a display area and a peripheral area, and includes: a first substrate; a cover plate, located on the first substrate and located in the peripheral area; a pattern layer, located on the cover plate and the first substrate an adhesive layer, located between the pattern layer and the first substrate; and a second substrate, located on the first substrate, and the adhesive layer encapsulates the first substrate and the second substrate . The display device of claim 8, wherein the cover plate partially overlaps the second substrate. The display device of claim 8, wherein the pattern layer partially overlaps the second substrate. The display device of claim 8, wherein the pattern layer does not overlap the second substrate. The display device according to claim 8, further comprising a first polarizer, located in the display area, and the second substrate is located between the first polarizer and the first substrate. The display device of claim 12, wherein a side of the cover plate facing away from the first substrate is coplanar with a side of the first polarizer facing away from the first substrate. The display device of claim 12, wherein the total thickness of the cover plate and the pattern layer is not greater than the thickness of the first polarizer.

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