TWM512146U - Double-sided display module with optically functional film - Google Patents

Abstract

A double-sided display module with two optically functional films includes a double-sided display panels, a lighting module, and a display controller. The double-sides display panel includes two oppositely disposed display panels, a light guide module, and two optically functional films. Each of the optically functional films includes a first transformation layer, a second transformation layer, a diffusion layer, a brightness enhancement layer, and a polarized layer, and each layer of the optically functional film is attached to each other by transfer-coating. Therefore, the thickness of the optically functional film can be reduced, so that the cost of manufacturing the double-sided display module with the optically functional films is lowered and the volume of the double-sided display module is reduced without reducing brightness.

Description

Double-sided display module with optical function film

The present invention relates to a display module, and more particularly to a double-sided display module having an optical functional film.

With the advancement of technology, the development of liquid crystal displays has become thinner and lighter, which is convenient for portability or easy to configure. At the same time, the range of applications of liquid crystal displays is quite wide, and the types of applications are commonly used in portable displays, outdoor or indoor exhibitions. Display, desktop display and vehicle display, etc. However, regardless of the application, reducing the size and cost of the liquid crystal display has always been a problem that the technician needs to solve.

A double-sided liquid crystal display has been developed. In order to control two liquid crystal displays simultaneously by using one controller, a common design is two liquid crystal displays facing away from each other, one being a main screen and the other being a sub-screen, and its application is, for example, In the large-scale exhibition hall, it can be viewed by more viewers through a double-sided liquid crystal display. For example, it can be applied to the service window of the household administration office, and at the same time, the administrative staff and consultants can view the information and increase the convenience.

In addition, the internal components of the backlight module in the display are mainly composed of a light-emitting element, an optical light guide plate, an optical conversion film, a diffusion film and a brightness enhancement film, and the optical conversion film, the diffusion film and the brightness enhancement film are independent opticals. Components, therefore, when assembling these optical components together, the matching between these optical components must be considered, and in order to allow the optical characteristics of the respective optical components to be fully utilized, it is necessary to pre-position the optical components between the components. A certain air gap is left. However, this structure not only causes an increase in the thickness of the overall liquid crystal display, but also causes loss of light intensity due to scattering and reflection in the reserved air gap during light transmission, thereby causing display of the entire liquid crystal display. The brightness is reduced. Therefore, how to reduce the overall thickness of these optical components after assembly without affecting the display brightness is a problem currently solved.

In order to solve the problems described in the prior art, the present invention provides a double-sided display module having an optical functional film, which integrates various components of the optical functional film by a transfer coating process and index matching (first conversion layer) The second conversion layer, the brightness enhancement layer, the diffusion layer and the polarizing layer can reduce the thickness of the optical functional film, thereby reducing the overall volume of the double-sided display module, and thus not reducing the brightness of the display module.

According to the above object, the present invention provides a double-sided display module having an optical functional film, comprising: a double-sided display comprising: a first display panel; a first optical functional film having a thickness of 0.4 to 1.4 mm, configured Above the first display panel; a light guiding module disposed above the first optical functional film; a second optical functional film having a thickness of 0.4 to 1.4 mm, disposed above the light guiding module; and a second a display panel disposed above the second optical function film; a light source module disposed on one side of the double-sided display for emitting a light source light to the light guide module of the double-sided display; and a display controller The first display panel and the second display panel are electrically connected to the double-sided display for outputting power and signals to the double-sided display; wherein the first optical functional film and the second optical functional film respectively comprise: a first conversion layer , having an upper surface and a lower surface, the upper surface of the first conversion layer is a 稜鏡 structure, the lower surface of the first conversion layer is a flat surface, and the first conversion layer is used to convert a point light source into The line source is light output; a second conversion layer having an upper surface and a lower surface, the upper surface of the second conversion layer is a meandering structure, the lower surface of the second conversion layer is a flat surface, and the second conversion layer Disposed on the first conversion layer, the second conversion layer is configured to convert the line source light outputted by the first conversion layer into a light source and output; and a diffusion layer having a flat upper surface and a flat lower surface, diffusing The layer is disposed on the second conversion layer, and the diffusion layer is configured to homogenize the surface source light output by the second conversion layer to make the light of the surface source light more uniform; wherein the first optical functional film and the second optical functional film The first conversion layer and the light guiding module are respectively attached to each other; wherein the orientations of the display screens of the first display panel and the second display panel are different by 180 degrees.

The double-sided display module with an optical functional film, wherein an edge of the upper surface of the first conversion layer is attached to an edge of the lower surface of the second conversion layer, first An air gap is formed between the upper surface of the conversion layer and the lower surface of the second conversion layer, and the flat lower surface edge of the diffusion layer is attached to the upper surface edge of the second conversion layer, and a diffusion layer and the second conversion layer form a gap Air gap.

The double-sided display module with an optical functional film, wherein the first optical functional film further comprises a brightness enhancing layer having a flat upper surface and a flat lower surface, a flat lower surface of the brightness enhancing layer and diffusion A first optical glue is attached between the flat upper surfaces of the layers.

The double-sided display module with an optical functional film, wherein the first optical functional film further comprises a polarizing layer, the polarizing layer has a flat upper surface and a flat lower surface, and the flat lower surface of the polarizing layer and the brightness enhancing layer A second optical adhesive is attached between the flat upper surfaces, and the upper surface of the polarizing layer is disposed on the lower surface of the lower polarizer.

The double-sided display module with an optical functional film, wherein a third optical adhesive is attached between the upper surface of the first conversion layer and the lower surface of the second conversion layer, and the upper surface of the first conversion layer is There is no air gap between the lower surfaces of the second conversion layer, and the flat lower surface of the diffusion layer is attached to the upper surface of the second conversion layer by a fourth optical glue without air gap, and the upper surface of the second conversion layer is There is no air gap between the flat lower surfaces of the diffusion layer.

The double-sided display module with an optical functional film, wherein the first optical functional film further comprises a brightness enhancing layer having a flat upper surface and a flat lower surface, a flat lower surface of the brightness enhancing layer and diffusion A fifth optical glue is attached between the flat upper surfaces of the layers.

The double-sided display module with an optical functional film, wherein the first optical functional film further comprises a polarizing layer, the polarizing layer has a flat upper surface and a flat lower surface, and the flat lower surface of the polarizing layer and the brightening layer A sixth optical adhesive is attached between the flat upper surfaces, and the upper surface of the polarizing layer is disposed on the lower surface of the lower polarizer.

The double-sided display module with an optical function film, wherein one of the first optical glue, the second optical glue, the third optical glue, the fourth optical glue, the fifth optical glue and the sixth optical glue is a refraction The rate matches the glue.

The double-sided display module with an optical function film, wherein the light guiding module has a first light guide plate and a second light guide plate adjacent to each other, and the first light guide plate The second optical function film is disposed above the first optical function film, and the second optical function film is disposed above the second light guide plate.

The double-sided display module with an optical function film, wherein the first display panel and the second display panel are both half-transparent and semi-reflective liquid crystal display panels.

The first conversion layer, the second conversion layer, and the brightness enhancement layer are integrated by the transfer coating process and the index matching method through the double-sided display module with the optical function film of the present invention. The diffusion layer and the polarizing layer can reduce the thickness of the optical functional film, thereby reducing the overall volume of the double-sided display module, and thus not reducing the brightness of the display module.

1, 1'‧‧‧ double-sided display module

11, 11'‧‧‧ double-sided display

111a‧‧‧First display panel

111b‧‧‧Second display panel

112, 112a, 112b, 112c, 112d, 112e, 112f‧‧‧ first optical functional film

1121‧‧‧First conversion layer

1122a, 1124a, 1122c, 1124c, 1122e, 1124e‧‧‧ air gap

1122b, 1124b, 1126c, 1122d, 1124d, 1126d, 1126e, 1128e, 1122f, 1124f, 1126f, 1128f‧‧‧ optical glue

1123‧‧‧Second conversion layer

1125‧‧‧Diffusion layer

1127‧‧ ‧ brightening layer

1129‧‧‧ polarizing layer

112’‧‧‧Second optical functional film

113a‧‧‧First light guide

113b‧‧‧Second light guide

113’‧‧‧Light guide

12‧‧‧Light source module

13‧‧‧ display controller

Figure 1 is a side view of the double-sided display module of the present invention.

Fig. 2 is a side elevational view showing the optical functional film of the double-sided display module of the first embodiment of the present invention.

Fig. 3 is a side elevational view showing the optical functional film of the double-sided display module of the second embodiment of the present invention.

Fig. 4 is a side elevational view showing the optical functional film of the double-sided display module of the third embodiment of the present invention.

Fig. 5 is a side elevational view showing the optical functional film of the double-sided display module of the fourth embodiment of the present invention.

Fig. 6 is a side elevational view showing the optical functional film of the double-sided display module of the fifth embodiment of the present invention.

Fig. 7 is a side elevational view showing the optical functional film of the double-sided display module of the sixth embodiment of the present invention.

Figure 8 is a side elevational view of a double-sided display module of another embodiment of the present invention.

Since the present invention discloses a double-sided display module, the light-emitting technology of the light-emitting element and the display technology of the display panel have been known to those skilled in the relevant art, and therefore will not be fully described in the following description. . At the same time, the drawings in the following texts express the structure and function diagrams related to the creative features, and do not need to be completely drawn according to the actual size, which is first described.

The present invention relates to a double-sided display module having an optical functional film, and more particularly to a double-sided display module including a double-sided display, an optical module and a display controller.

First, please refer to FIG. 1 , which is a schematic diagram of the double-sided display module of the present invention.

As shown in FIG. 1 , the double-sided display module 1 of the present invention is composed of a double-sided display 11 , a light source module 12 and a display controller 13 , and the light source module 12 is disposed on one of the double-sided displays 11 . On the side, the display controller 13 is electrically connected to the double-sided display 11 on the principle that the display of the double-sided display 11 is not hindered. The light source module 12 is used to emit a little light source light to the double-sided display 11, and the display controller 13 outputs A power and a signal to the double-sided display 11, the power and signal input methods are generally known in the art.

Referring to FIG. 1 , the double-sided display 11 is composed of a first display panel 111 a , a second display panel 111 b , a first optical function film 112 , a second optical function film 112 ′ and a first light guide plate 113 a . And a light guiding module formed by a second light guide plate 113b. The orientations of the display screens of the first display panel 111a and the second display panel 111b are different by 180 degrees. One side of the first display panel 111a is electrically connected to the display controller 13, and the manner of electrical connection is not limited, as long as the electrical signal and the data signal can be transmitted. The first optical function film 112 is disposed above the first display panel 111a, and the first light guide plate 113a is disposed above the first optical function film 112, and the light guiding surface of the first light guiding plate 113a (lighting the light to the light emitting surface of the display panel) ) facing the first optical function film 112 , the second light guide plate 113 b is disposed above the first light guide plate 113 a , the light guide surface of the second light guide plate 113 b faces the second optical function film 112 ′, and the light guide of the first light guide plate 113 a The surface of the light guide surface of the second light guide plate 113b is disposed opposite to each other, and the second optical function film 112' is disposed above the second light guide plate 113b. The second display panel 111b is disposed above the second optical functional film 112'. One side of the second display panel 111b is electrically connected to the display controller 13, and the manner of electrical connection is not limited, as long as the electrical signal and the data signal can be transmitted.

Then, referring to FIG. 1 , the light source module 12 outputs the point source light to the first light guide plate 113a and the second light guide plate 113b. The first light guide plate 113a and the second light guide plate 113b are used to guide the light of the point source light. The direction is changed to be directed parallel to the plane normal direction of the first optical functional film 112 and the second optical functional film 112'. The first light guide plate 113a and the second light guide plate 113b respectively lead the point light source light to the first optical function film 112 and the second optical function film 112', and the first optical function film 112 and the second optical function film 112' are sequentially Converting the point source light into line source light, converting the line source light into the surface source light and optically processing the surface source light, and finally, the first optical functional film 112 and the second optical functional film 112' respectively process the processed surface The light source light is output to the first display panel 111a and the second display panel 111b for displaying an image.

Here, the point source light refers to light emitted by a point type light source, and the so-called line source light refers to light emitted by a line type light source, and the so-called surface source light means equivalent to a surface type. The light emitted by the light source. The point source light, the line source light, and the surface source light referred to in the following other embodiments are also explained.

Next, referring to FIG. 2, it is a side view of the first optical functional film 112a of the double-sided display module 1 of the first embodiment of the present invention, because the 112' of the second optical functional film is the same as the first optical function. Since the composition of the film 112a is described below, only the composition of the first optical function film 112a will be described.

As shown in FIG. 2, the first optical functional film 112a has a first conversion layer 1121, a second conversion layer 1123, and a diffusion layer 1125. The first conversion layer 1121 has an upper surface and a lower surface, and the second conversion layer. 1123 has an upper surface and a lower surface. The diffusion layer 1125 has a flat upper surface and a flat lower surface. The upper surface of the first conversion layer 1111 and the upper surface of the second conversion layer 1123 are both a single structure. The included angle has a range of 40 degrees to 140 degrees, and the arrangement directions of the first conversion layer 1121 and the second conversion layer 1123 are orthogonal, and the edge of the upper surface of the first conversion layer 1121 and the flat lower surface of the second conversion layer 1123 Edge transfer printing process The manner of attaching to each other is such that an air gap 1122a is formed between the upper surface of the first conversion layer 1121 and the lower surface of the second conversion layer 1123, and the flat lower surface edge of the diffusion layer 1125 is transferred by a coating process. The manner is attached to the upper surface edge of the second conversion layer 1123. Therefore, an air gap 1124a is formed between the lower surface of the diffusion layer 1125 and the upper surface of the second conversion layer 1123, and the upper surface of the diffusion layer 1125 is attached or placed first. The first conversion layer 1121 is configured to convert the point source light emitted by the light source module 12 into line source light, and the second conversion layer 1123 is configured to convert the line source light of the first conversion layer 1121 into a lower surface of the display panel 111a. The surface of the surface light source is output to the diffusion layer 1125, and the diffusion layer 1125 receives the surface light source outputted by the second conversion layer 1123 and is homogenized to make the light of the surface light source more uniform and diffuse. The layer 1125 outputs the lighted surface light source to the first display panel 111a, and the first display panel 111a is used to display an image. Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112a, and the upper surface of the diffusion layer 1125 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The diffusion layer 1125 of the second optical functional film 112' outputs the light source after the uniformization to the second display panel 111b.

Next, referring to FIG. 3, it is a side view of the first optical function film 112b of the double-sided display module 1 of the second embodiment, because the 112' of the second optical functional film is the same as the first optical function. Since the composition of the film 112b is described below, only the composition of the first optical function film 112b will be described.

As shown in FIG. 3, the first optical functional film 112b has a first conversion layer 1121, a second conversion layer 1123, and a diffusion layer 1125. The first conversion layer 1121 has an upper surface and a lower surface, and the second conversion layer 1123 has an upper surface. And the lower surface, the diffusion layer 1125 has a flat upper surface and a flat lower surface, and the upper surface of the first conversion layer 1111 and the upper surface of the second conversion layer 1123 are both 稜鏡 structures, and the 稜鏡 angle is 40 degrees to 140 degrees. The arrangement direction of the first conversion layer 1121 and the second conversion layer 1123 is orthogonal, and the air gap between the upper surface of the first conversion layer 1121 and the lower surface of the second conversion layer 1123 is filled with the optical glue 1122b, in other words The upper surface of the first conversion layer 1121 is attached to the flat lower surface of the second conversion layer 1123 without air gap by the optical paste 1122b in a transfer coating process, and the diffusion layer 1125 is attached. The flat lower surface is attached to the upper surface of the second conversion layer 1123 without air gap by means of transfer coating by optical adhesive 1124b, and the flat upper surface of the diffusion layer 1125 is attached or placed on the first display panel. The first conversion layer 1121 is configured to convert the point source light emitted by the light source module 12 into line source light, and the second conversion layer 1123 is configured to convert the line source light of the first conversion layer 1121 into a surface light source. Light, and the surface light source is output to the diffusion layer 1125. The diffusion layer 1125 receives the surface light source outputted by the second conversion layer 1123 and then homogenizes the light of the surface light source to be more uniform, and the diffusion layer 1125 will be homogenized. The surface light source light is output to the first display panel 111a, and the first display panel 111a is used to display an image. Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112b, and the upper surface of the diffusion layer 1125 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The diffusion layer 1125 of the second optical functional film 112' outputs the light source after the uniformization to the second display panel 111b.

Next, referring to FIG. 4, it is a side view of the first optical functional film 112c of the double-sided display module 1 of the third embodiment of the present invention, because the 112' of the second optical functional film is the same as the first optical function. Since the composition of the film 112c is as follows, only the composition of the first optical function film 112c will be described below.

As shown in FIG. 4, the first optical functional film 112c has a first conversion layer 1121, a second conversion layer 1123, a diffusion layer 1125, and a brightness enhancement layer 1127. The first conversion layer 1121 has an upper surface and a lower surface, and the second conversion The layer 1123 has an upper surface and a lower surface, the diffusion layer 1125 has a flat upper surface and a flat lower surface, and the brightness enhancing layer 1127 has a flat upper surface and a flat lower surface, the upper surface of the first conversion layer 1111 and the second conversion layer 1123. The surface is a 稜鏡 structure, and the 稜鏡 angle has a range of 40 degrees to 140 degrees, and the arrangement directions of the first conversion layer 1121 and the second conversion layer 1123 are orthogonal, and the edge of the upper surface of the first conversion layer 1121 is The edges of the flat lower surface of the second conversion layer 1123 are attached to each other by a transfer coating process, so that an air gap 1122c is formed between the upper surface of the first conversion layer 1121 and the lower surface of the second conversion layer 1123. The flat lower surface edge of the layer 1125 is attached to the upper surface edge of the second conversion layer 1123 by a transfer coating process, so that the air between the lower surface of the diffusion layer 1125 and the upper surface of the second conversion layer 1123 is air. Gap 1124c, brightening layer The surface under the 1127 is attached to the upper surface of the diffusion layer 1125 without air gap by the transfer coating process by the optical adhesive 1126c. The upper surface of the brightness enhancement layer 1127 is attached or placed on the first display panel 111a. The first conversion layer 1121 is configured to convert the point source light emitted by the light source module 12 into a line source light output to the second conversion layer 1123, and the second conversion layer 1123 is configured to output the line of the first conversion layer 1121. The light source light is converted into surface light source light, the second conversion layer 1123 outputs the surface light source light to the diffusion layer 1125, and the diffusion layer 1125 receives the surface light source outputted by the second conversion layer 1123, and is used to uniformly surface light source and output to the brightness enhancement layer. 1127, after receiving the surface light source, the brightness enhancement layer 1127 is used to increase the brightness of the surface light source light output by the diffusion layer 1125. After the brightness enhancement layer 1127 enhances the surface light of the brightness, the surface light source is output to the first display panel 111a. Display images. Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112c, and the upper surface of the brightening layer 1127 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The brightness enhancement layer 1127 of the second optical function film 112' outputs the surface light source having the enhanced brightness to the second display panel 111b.

Next, referring to FIG. 5, it is a side view of the first optical functional film 112d of the double-sided display module 1 of the fourth embodiment, because the composition of the second optical functional film 112' is the same as the first optical function. Since the composition of the film 112d is described below, only the composition of the first optical functional film 112d will be described.

As shown in FIG. 5, the first optical functional film 112d has a first conversion layer 1121, a second conversion layer 1123, a diffusion layer 1125, and a brightness enhancement layer 1127. The first conversion layer 1121 has an upper surface and a lower surface, and the second conversion The layer 1123 has an upper surface and a lower surface, the diffusion layer 1125 has a flat upper surface and a flat lower surface, and the brightness enhancement layer 1127 has a flat upper surface and a flat lower surface, the upper surface of the first conversion layer 1111 and the second conversion layer 1123 The surface is a 稜鏡 structure, the 稜鏡 angle has a range of 40 degrees to 140 degrees, the arrangement directions of the first conversion layer 1121 and the second conversion layer 1123 are orthogonal, and the upper surface of the first conversion layer 1121 and the second conversion The flat lower surface of the layer 1123 is attached by optical transfer coating 1122d by means of transfer coating without air gap, and the flat lower surface of the diffusion layer 1125 is transferred by optical paste 1124d by transfer coating. Adhesively attached to the upper surface of the second conversion layer 1123 without air gap, the lower surface of the brightness enhancement layer 1127 is optically glued 1126d by transfer coating without air gap The surface of the brightness enhancing layer 1127 is attached to the upper surface of the diffusion layer 1125. The surface of the brightness enhancing layer 1127 is attached to or disposed on the lower surface of the first display panel 111a. The first conversion layer 1121 is used to light the point source light emitted by the light source module 12. Converted to line source light and output to the second conversion layer 1123, the second conversion layer 1123 is used to convert the line source light of the first conversion layer 1121 into surface source light, and the second conversion layer 1123 outputs the surface source light to the diffusion layer. 1125, after the diffusion layer 1125 receives the surface light source light outputted by the second conversion layer 1123, the surface source light is homogenized, and the diffusion layer 1125 outputs the surface light source after the uniformization to the brightness enhancement layer 1127, and the brightness enhancement layer 1127 The surface light source light outputted by the diffusion layer 1125 is received to increase the brightness of the surface light source light output by the diffusion layer 1125. After the brightness enhancement layer 1127 raises the brightness of the surface light source, the surface light source is output to the first display panel 111a to display an image. . Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112d, and the upper surface of the brightening layer 1127 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The brightness enhancement layer 1127 of the second optical function film 112' outputs the surface light source having the enhanced brightness to the second display panel 111b.

Next, please refer to FIG. 6 , which is a side view of the first optical functional film 112 e of the double-sided display module 1 of the fifth embodiment of the present invention, because the composition of the second optical functional film 112 ′ is the same as the first optical function. Since the composition of the film 112e is described below, only the composition of the first optical function film 112e will be described.

As shown in FIG. 6, the first optical functional film 112e is composed of a first conversion layer 1121, a second conversion layer 1123, a diffusion layer 1125, a brightness enhancement layer 1127, and a polarizing layer 1129. The first conversion layer 1121 has an upper surface. And the lower surface, the second conversion layer 1123 has an upper surface and a lower surface, the diffusion layer 1125 has a flat upper surface and a flat lower surface, the brightness enhancement layer 1127 has a flat upper surface and a flat lower surface, and the polarizing layer 1129 has a flat upper surface and a flat surface The lower surface, the upper surface of the first conversion layer 1121 and the upper surface of the second conversion layer 1123 are both 稜鏡 structures, and the 稜鏡 angle has a range of 40 degrees to 140 degrees, and the first conversion layer 1121 and the second conversion layer 1123 The arrangement direction is orthogonal, and the edge of the upper surface of the first conversion layer 1121 is attached to the edge of the flat lower surface of the second conversion layer 1123 by transfer coating, so the upper surface of the first conversion layer 1121 An air gap 1122e is formed between the lower surface of the second conversion layer 1123, and the flat lower surface edge of the diffusion layer is transferred and coated by the second rotation. The upper surface of the layer 1123 is attached to the surface, so that the air gap 1124e is formed between the diffusion layer 1125 and the second conversion layer 1123, and the lower surface of the brightness enhancement layer 1127 is coated with the optical glue 1126e by air transfer without air gap. Attached to the upper surface of the diffusion layer 1125, the lower surface of the polarizing layer 1129 is attached to the upper surface of the brightness enhancing layer 1127 without an air gap by means of transfer coating by optical adhesive 1128e, above the polarizing layer 1129. The surface is attached to the lower surface of the first display panel 111a. The first conversion layer 1121 is configured to convert the point source light emitted by the light source module 12 into line source light and output the light to the second conversion layer 1123. The second conversion layer 1123 The light source light of the first conversion layer 1121 is converted into surface light source and then output to the diffusion layer 1125. The diffusion layer 1125 is used to homogenize the surface light of the second conversion layer 1123, so that the light of the surface light is further Uniform, and the brightening layer 1127 is used to enhance the brightness of the surface light source after the uniformity of the diffusion layer 1123. The polarizing layer 1129 receives the surface light of the brightness enhancement layer 1127 after the brightness enhancement, and converts the surface light into polarized light. The polarizing layer 1129 outputs the surface light source to the first Illustrates an image display panel 111a. Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112e, and the upper surface of the polarizing layer 1129 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The polarizing layer 1129 of the second optical functional film 112' outputs the surface light source converted into polarized light to the second display panel 111b.

Next, please refer to FIG. 7 , which is a side view of the first optical functional film 112 f of the double-sided display module 1 of the sixth embodiment, because the composition of the first optical functional film 112 f is the same as that of the second optical functional film. The composition of 112' is described by the composition of the first optical functional film 112f. .

As shown in FIG. 7, the first optical functional film 112f of the present invention is composed of a first conversion layer 1121, a second conversion layer 1123, a diffusion layer 1125, a brightness enhancement layer 1127, and a polarizing layer 1129. The first conversion layer 1121 Having an upper surface and a lower surface, the second conversion layer 1123 has an upper surface and a lower surface, the diffusion layer 1125 has a flat upper surface and a flat lower surface, the brightness enhancement layer 1127 has a flat upper surface and a flat lower surface, and the polarizing layer 1129 has a flat upper surface The surface and the flat lower surface, the upper surface of the first conversion layer 1121 and the upper surface of the second conversion layer 1123 are both a 稜鏡 structure, the 稜鏡 angle has a range of 40 degrees to 140 degrees, the first conversion layer 1121 and the Two conversion layer 1123 The arrangement direction is orthogonal, and the upper surface of the first conversion layer 1121 and the flat lower surface of the second conversion layer 1123 are attached by the optical adhesive 1122f by means of transfer coating without air gap, and the diffusion layer The flat lower surface of 1125 is attached to the upper surface of the second conversion layer 1123 by air transfer by means of transfer coating, and the lower surface of the brightness enhancement layer 1127 is rotated by the optical glue 1126f. The printing method is attached to the upper surface of the diffusion layer 1125 without air gap, and the lower surface of the polarizing layer 1129 is attached to the brightness enhancing layer 1127 by optical transfer coating 1128f without air gap by transfer coating. On the upper surface, the upper surface of the polarizing layer 1129 is attached to the lower surface of the first display panel 111a, and the first conversion layer 1121 is configured to convert the point source light emitted by the light source module 12 into line source light, and the second conversion layer 1123 The light source light outputted by the first conversion layer 1121 is converted into surface light source light, and the diffusion layer 1125 is used for averaging the surface light source light outputted by the second conversion layer 1123 to make the light of the surface light source light more uniform. Brightening layer 1127 is used to enhance the uniformity of the diffused layer 1125 The brightness of the surface light source outputted, the polarizing layer 1129 receives the surface light source having the brightness enhanced by the brightness enhancing layer 1127, converts the surface light source into polarized light, and the polarizing layer 1129 outputs the surface light source light to the first display panel 111a. The first display panel 111a displays an image. Similarly, the second optical functional film 112' has the same composition as the first optical functional film 112f, and the upper surface of the polarizing layer 1129 of the second optical functional film 112' is attached or placed on the lower surface of the second display panel 111b. The polarizing layer 1129 of the second optical functional film 112' outputs the surface light source converted into polarized light to the second display panel 111b.

Finally, please refer to FIG. 8 , a side view of the double-sided display module 1 ′ of another embodiment of the present invention, and the double-sided display module 1 ′ of the embodiment of FIG. 8 is as described above with respect to FIG. 1 . The description of the double-sided display 11' is also as described above with respect to FIG. 1, and the first optical functional film 112 and the second optical functional film 112' are described as described above with respect to FIGS. 2-7. The difference is that the number of the light guide plates 113' shown in FIG. 8 is one, and one light guide plate has two light guiding surfaces (light guiding light to the light emitting surface of the display panel), and the two light guiding surfaces respectively face the first optical function film 112 and The second optical functional film 112'.

In the above embodiments of the present invention, the materials of the first conversion layer 1121 and the second conversion layer 1123 are a high molecular polymer, such as resin, acrylic. Etc., there is no limit to this creation.

In each of the above embodiments, the optical glues 1122b, 1124b, 1126c, 1122d, 1124d, 1126d, 1126e, 1128e, 1122f, 1125f, 1126f, 1128f are an index matching glue, a first conversion layer 1121 and a second conversion layer. The optical glues 1122b, 1122d, 1122f between 1123 have a refractive index of about 1.35 to 1.48, and the optical glues 1124b, 1124d, and 1124f between the second conversion layer 1123 and the diffusion layer 1125 have a refractive index of about 1.35 to 1.48, and the brightness enhancement layer 1127 The refractive index of the optical glues 1128e, 1128f with the polarizing layer 1129 is about 1.48 to 1.52, and the refractive indices of the optical glues 1126c, 1126d, 1126e, 1126f between the diffusion layer 1125 and the brightness enhancing layer 1127 are about 1.48 to 1.52. By means of index matching, between the first conversion layer 1121 and the second conversion layer 1123 in the above embodiments, between the brightness enhancement layer 1127 and the polarizing layer 1129, between the diffusion layer 1125 and the brightness enhancement layer 1127, and The second conversion layer 1123 and the diffusion layer 1125 can be closely attached, and the first conversion layer 1121 of the first optical function film 112 and the second optical function film 112' is transferred by a transfer coating process. Second conversion layer 1123, diffusion layer 1125, brightness enhancement layer 1127 And the polarizing layer 1129 is integrated to reduce the thickness of the first optical functional film 112 and the second optical functional film 112', thereby reducing the overall volume of the double-sided display module 1 by about 50% to 60%, and thus does not Reduce the brightness of the double-sided display module 1. In each of the above embodiments, the overall thickness of the first optical functional film 112 and the second optical functional film 112' including the polarizing layer 1129 is 0.6 mm (mm) to 1.4 mm (mm), respectively, without including the polarizing layer 1129. The overall thickness of an optical functional film 112 and the second optical functional film 112' is individually from 0.4 millimeters (mm) to 1.2 millimeters (mm).

In each of the above embodiments of the present invention, the first conversion layer 1121 and the second conversion layer 1123 and the second conversion layer are disposed between the first and second conversion layers 1121 and 1123 of the second and second optical functional films 112' by edge attachment. The manner of reserving the air gap between the 1123 and the diffusion layer 1125 can reduce the thermal expansion and contraction problem and increase the reliability of the double-sided display module 1, that is, does not affect the display brightness or the display contrast.

In the above embodiments of the present invention, the polarizing layer 1129 is an optical element capable of generating a polarizing effect, such as a linear polarizing plate, an elliptically polarizing plate, a circular polarizing plate, etc., and the present invention is not limited thereto.

In the above embodiments of the present invention, the first display panel 111a and the second display panel 111b may be a liquid crystal display (LCD) display panel, and the technology related to the transflective liquid crystal display panel. For details, please refer to US Patent No. 6,094,486, which was filed on February 18, 2003, and Taiwan Patent No. I246619, which was filed on February 12, 2004. The user can clearly view the image under all lighting conditions. There is not much power consumption, and the transflective liquid crystal display panel can be used for portable displays, desktop displays, and automotive displays. Portable displays are, for example, displays for mobile phones, cameras, and tablets, and desktop displays such as televisions, desktop computers, and notebook computers, such as satellite navigation, instrument panels, and driving records. The display of the device is not limited in this creation; the light source module may be a Light Emitting Diode (LED), a Cold Cathode Fluorescent Lamp (CCFL) or an Electro Luminescent (Electro Luminescent; EL), there is no limit to this creation. For example, the light source module can be implemented as an LED light bar.

In each of the above embodiments, the light source module 12 is disposed on one side of the double-sided display 11, 11', or may be disposed on both sides of the double-sided display 11, 11' to increase the overall display brightness. There is no limit to creation.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; the above description should be understood and implemented by those skilled in the relevant art, so that the other disclosures are not disclosed. Equivalent changes or modifications made under the spirit shall be included in the scope of the patent application.

1‧‧‧Double-sided display module

11‧‧‧Double-sided display

111a‧‧‧First display panel

111b‧‧‧Second display panel

112‧‧‧First optical functional film

112’‧‧‧Second optical functional film

113a‧‧‧First light guide

113b‧‧‧Second light guide

12‧‧‧Light source module

13‧‧‧ display controller

Claims (14)

A double-sided display module having an optical functional film, comprising: a double-sided display comprising: a first display panel; a first optical functional film having a thickness of 0.4 to 1.4 mm, disposed above the first display panel a light guiding module disposed above the first optical functional film; a second optical functional film having a thickness of 0.4 to 1.4 mm disposed above the light guiding module; and a second display panel configured Above the second optical functional film; a light source module disposed on one side of the double-sided display for emitting a little light source light to the light guiding module of the double-sided display; and a display controller The first display panel and the second display panel are electrically connected to the double-sided display for outputting power and signals to the double-sided display; wherein the first optical functional film and the second optical functional film respectively comprise a first conversion layer having an upper surface and a lower surface, the upper surface of the first conversion layer being a meandering structure, the lower surface of the first conversion layer being a flat surface, the first conversion layer Used to put a little The source light is converted into a line of light source and outputted; a second conversion layer having an upper surface and a lower surface, the upper surface of the second conversion layer being a meandering structure, and the lower surface of the second conversion layer is a flat surface, the second conversion layer is disposed on the first conversion layer, and the second conversion layer is configured to convert the line source light outputted by the first conversion layer into a light source and output the same; a diffusion layer having a flat upper surface and a flat lower surface, the diffusion layer being disposed on the second conversion layer, wherein the diffusion layer is configured to homogenize the surface light source output by the second conversion layer, The light of the surface light source is more uniform; wherein the first optical function film and the second optical function film are bonded to the light guiding module by the first conversion layer; wherein the first display panel and the first display panel The orientation of the display screen of the second display panel is different by 180 degrees. The double-sided display module with an optical functional film according to claim 1, wherein an edge of the upper surface of the first conversion layer is attached to an edge of the lower surface of the second conversion layer, the An air gap is formed between the upper surface of a conversion layer and the lower surface of the second conversion layer, and the flat lower surface edge of the diffusion layer is attached to the upper surface edge of the second conversion layer, the diffusion layer An air gap is formed between the second conversion layer. The double-sided display module with an optical functional film according to claim 2, wherein the first optical functional film further comprises a brightness enhancing layer having a flat upper surface and a flat lower surface. A first optical paste is attached between the flat lower surface of the brightness enhancing layer and the flat upper surface of the diffusion layer. The double-sided display module with an optical functional film according to claim 3, wherein the first optical functional film further comprises a polarizing layer having a flat upper surface and a flat lower surface, the polarizing A second optical adhesive is attached between the flat lower surface of the layer and the flat upper surface of the brightness enhancing layer, and the upper surface of the polarizing layer is disposed below the first display panel. The double-sided display module with an optical functional film according to claim 1, wherein a third optical is attached between the upper surface of the first conversion layer and the lower surface of the second conversion layer. a glue, and there is no air gap between the upper surface of the first conversion layer and the lower surface of the second conversion layer, the flat lower surface of the diffusion layer being attached to the fourth optical adhesive without air gap The upper surface of the second conversion layer has no air gap between the upper surface of the second conversion layer and the flat lower surface of the diffusion layer. The double-sided display module with an optical functional film according to claim 5, wherein the first optical functional film further comprises a brightness enhancing layer having a flat upper surface and a flat lower surface. A fifth optical paste is attached between the flat lower surface of the brightness enhancing layer and the flat upper surface of the diffusion layer. The double-sided display module with an optical functional film according to claim 6, wherein the first optical functional film further comprises a polarizing layer, the polarizing layer having a flat upper surface and a flat lower surface, the polarizing A sixth optical adhesive is attached between the flat lower surface of the layer and the flat upper surface of the brightness enhancing layer, and the upper surface of the polarizing layer is disposed below the first display panel. The double-sided display module with an optical functional film according to claim 3, wherein the first optical glue is an index matching glue. The double-sided display module with an optical functional film according to claim 4, wherein the second optical glue is an index matching glue. The double-sided display module with an optical functional film according to claim 5, wherein the third optical adhesive or the fourth optical adhesive is an index matching glue. The double-sided display module with an optical functional film according to claim 6, wherein the fifth optical glue is an index matching glue. The double-sided display module with an optical functional film according to claim 7, wherein the sixth optical glue is an index matching glue. The double-sided display module with an optical functional film according to the first aspect of the invention, wherein the light guiding module has a first light guiding plate and a second light guiding plate disposed adjacent to each other, and the first light guiding plate is configured Above the first optical functional film, the second optical functional film is disposed above the second light guide plate. The double-sided display module with an optical functional film according to the first aspect of the invention, wherein the first display panel and the second display panel are both semi-reflective liquid crystal display panels.