TW202419946A - Display device - Google Patents

Abstract

A display device has a display area and a non-display area. The display device includes a backlight module, a LCD module, a protective glass and an optical adhesive layer. The backlight module is arranged corresponding to the display area. The LCD module is assembled on the backlight module. The protective glass is disposed on a side of the LCD module away from the backlight module. The optical adhesive layer is disposed between the LCD module and the protective glass. The LCD module, the protective glass and the optical adhesive layer are all extended in the display area and the non-display area.

Description

Display device

The present disclosure relates to a display device, and in particular to a display device having a display area and a non-display area that are integrally black.

Generally, a protective glass is attached to the top of the display panel, and black ink is printed on the back of the protective glass in the non-display area. The purpose is to make the display area and the non-display area have the closest base color through the ink coating, that is, the so-called visual black. The traditional method is to adjust the ink material and color to make the reflection brightness and chromaticity of the ink area as close as possible to the base color of the display area of the display panel, or to add a semi-transparent layer in the display area to reduce the reflection brightness of the display area.

Because different panel manufacturers use different optical materials and structural stacking, the base colors of display panels produced by each panel manufacturer are different. However, due to the limited ink materials, the range of adjustment is also limited. Therefore, when the display panel is turned off or not displaying the picture, the boundary and division between the display area and the non-display area can still be clearly seen, but the effect of complete black cannot be achieved.

In view of the above, the present disclosure provides, in one embodiment, a display device having a display area and a non-display area. The display device includes a backlight module, a liquid crystal module, a protective glass, and an optical adhesive layer. The backlight module is located in the display area. The liquid crystal module is stacked on the backlight module, the protective glass is disposed on one side of the liquid crystal module away from the backlight module, and the optical adhesive layer is disposed between the liquid crystal module and the protective glass. Among them, the liquid crystal module, the protective glass, and the optical adhesive layer are all extended to the display area and the non-display area.

The present invention discloses a liquid crystal module with the same stacking structure in both the non-display area and the display area without setting up an additional ink area. Thus, when the display device is not turned on, since the non-display area and the display area of the entire display device have the same material and structure, the reflection brightness and chromaticity of the two areas are almost the same, so the entire plane can be formed with a completely identical black visual experience. The difference in reflection brightness and chromaticity between the non-display area and the display area caused by the color difference of the applied ink is reduced. It also reduces the process of repeated adjustment of black ink by traditional panel manufacturers for display panels from different sources.

The following embodiments are presented for detailed description, however, the embodiments are only used as examples and do not limit the scope of the present disclosure. In addition, some elements are omitted in the drawings in the embodiments to clearly show the technical features of the present disclosure. The same reference numerals will be used to represent the same or similar elements in all drawings.

Please refer to Figures 1 and 2 first. Figure 1 is a schematic top view of a display device according to an embodiment of the present disclosure. Figure 2 is a schematic partial cross-sectional view of a display module according to an embodiment of the present disclosure. As can be seen from Figure 1, the display device 100 of the present embodiment has a display area 110 and a non-display area 120. The non-display area 120 is located outside the display area 110. In the present embodiment, the non-display area 120 surrounds the outer side of the display area 110 for illustration, but is not limited to this. The non-display area 120 can also be arranged on any one side of the four sides of the display area 110 or on any two sides (inclusive) or more. It depends on the size of the electronic circuit and the display area. If the non-display area 120 is only disposed on the upper and lower sides, the left and right sides of the display area 110 can produce a display visual experience that is close to a borderless feeling.

The display device 100 includes a backlight module 20, a liquid crystal module 30, a protective glass 40, and an optical adhesive layer 50. The display device 100 may be, for example, a TFT-LCD display screen.

The backlight module 20 is located in the display area 110. The backlight module 20 can be a side-lit backlight module or a direct-lit backlight module, but is not limited thereto. The backlight module 20 can include at least a light-emitting diode, a reflector plate, a diffuser plate, a diffuser plate, and the like. Depending on the different light-input modes, it can also include a light guide plate, etc., to provide the light source required by the liquid crystal module 30.

The liquid crystal module 30 is stacked on the backlight module 20 and is located above the backlight module 20 to receive the light generated by the backlight module 20 and display the desired image. The protective glass 40 is disposed on a side of the liquid crystal module 30 away from the assembly housing 10. The optical adhesive layer 50 is disposed between the liquid crystal module 30 and the protective glass 40 to adhere the liquid crystal module 30 and the protective glass 40 to each other and avoid the generation of medium such as air to affect the emitted light and the displayed image.

As can be seen from FIG. 2 , the liquid crystal module 30, the protective glass 40 and the optical adhesive layer 50 are all extended and disposed in the display area 110 and the non-display area 120. In other words, only the backlight module 20 is disposed at a position corresponding to the display area 110, and the rest of the liquid crystal module 30, the protective glass 40 and the optical adhesive layer 50 are all disposed in the display area 110 and the non-display area 120 at the same time.

Thus, even if the front display of the display device 100 is to be entirely black, it is not necessary to set an additional ink layer in the non-display area 120. In this example, by making the non-display area 120 and the display area 110 have the same stacking structure of the liquid crystal module 30, the protective glass 40 and the optical adhesive layer 50, when the backlight module 20 is not turned on, since the non-display area 120 and the display area 110 of the entire display device 100 have the same material and structure, the reflection brightness and chromaticity of the two areas are almost the same. As shown in the light path in FIG. 2 , since the stacked layer structure through which the light in the display area 110 passes and reflects is the same as the stacked layer structure through which the light in the non-display area 120 passes and reflects, the entire plane can be formed to have a completely identical black visual experience. The difference in reflected brightness and chromaticity between the non-display area 120 and the display area 110 caused by the color difference of the applied ink is reduced. It also reduces the need for traditional panel manufacturers to repeatedly adjust the black ink process for display panels with different sources.

Taking a TFT-LCD display screen as an example, the liquid crystal module 30 may be stacked from bottom to top in order to include a lower polarizer, a thin film transistor substrate, a storage capacitor, a thin film transistor, an indium tin oxide pixel electrode, a liquid crystal, a spacer, an alignment film, an indium tin oxide common electrode, a black matrix, a color filter substrate, an upper polarizer, etc.

In this embodiment, the liquid crystal module 30 further includes a display area circuit, a non-display area circuit, and a driving integrated circuit. The display area circuit corresponds to the display area 110, and the non-display area circuit corresponds to the non-display area 120. The non-display area circuit and the display area circuit are routed in the same manner. The driving integrated circuit is electrically connected to and drives the display area circuit, and can be set on the thin film transistor substrate to drive the display area circuit to generate an image. Since the non-display area circuit located in the non-display area 120 is not electrically connected to the driving display area circuit, even if the circuit is set, it will not be turned on to generate an image.

Please continue to refer to FIG. 2 . In this embodiment, the display device 100 further includes an assembly housing 10 having a receiving space 11. The backlight module 20 is disposed in the receiving space 11 so that the receiving space 11 corresponds to a display area 110. In this embodiment, the receiving space 11 of the assembly housing 10 is recessed, which is the display area 110, and the remaining outer portion of the assembly housing 10 is the non-display area 120. That is, the assembly housing 10 is extended to the display area 110 and the non-display area 120.

The liquid crystal module 30 is fixed to the assembly housing 10 via the adhesive 31, and corresponds to the covering accommodation space 11. As shown in FIG. 2, the adhesive 31 is disposed at the non-display area 120 of the assembly housing 10, and the liquid crystal module 30 is fixed to the assembly housing 10 from the non-display area 120. In the display area 110, the liquid crystal module 30 is only formed to be stacked on the backlight module 20, but not directly attached to the backlight module 20. This makes it easier to relatively assemble the components in the display device 100 and increase its overall strength, and it is also easier to distinguish the display area 110 from the non-display area 120 during assembly, so that the display area circuits correspond to the display area 110, and the non-display area circuits can correspond to the non-display area 120.

In summary, the present disclosure does not set up an additional ink area, but makes the non-display area and the display area have the same stacking structure of the liquid crystal module. Therefore, when the display device is not turned on, since the non-display area and the display area of the entire display device have the same material and structure, the reflection brightness and chromaticity of the two areas are almost the same, so the entire plane can be formed with a completely identical black visual experience.

100: Display device 110: Display area 120: Non-display area 10: Assembly housing 11: Storage space 20: Backlight module 30: Liquid crystal module 31: Colloid 40: Protective glass 50: Optical glue layer

FIG. 1 is a schematic top view of a display device according to an embodiment of the present disclosure. FIG. 2 is a schematic partial cross-sectional view of an embodiment of the present disclosure along the AA section of FIG. 1 .

100: Display device

110: Display area

120: Non-display area

10: Assemble the shell

11: Storage space

20: Backlight module

30: LCD module

31:Colloid

40: Protective glass

50: Optical glue layer

Claims (5)

A display device has a display area and a non-display area, and the display device includes: a backlight module, located in the display area; a liquid crystal module, stacked on the backlight module; a protective glass, arranged on a side of the liquid crystal module away from the backlight module; and an optical adhesive layer, arranged between the liquid crystal module and the protective glass; wherein the liquid crystal module, the protective glass and the optical adhesive layer are all extended to the display area and the non-display area. A display device as described in claim 1, wherein the liquid crystal module comprises: a display area circuit corresponding to the display area; a non-display area circuit corresponding to the non-display area, the non-display area circuit and the display area circuit are routed in the same manner; and a driving integrated circuit electrically connected to and driving the display area circuit. A display device as described in claim 1, wherein the non-display area is located outside the display area. The display device as described in claim 1 further includes an assembly housing having a receiving space, and the backlight module is arranged in the receiving space so that the receiving space corresponds to form the display area. In the display device as described in claim 4, the liquid crystal module is fixed to the assembly housing via a colloid and corresponds to covering the accommodating space.

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