KR20040033131A - liquid crystal display with a photoconductive board having back light and front light functions - Google Patents

Abstract

PURPOSE: An LCD(Liquid Crystal Display) having a photoconductive substrate with a counter light function and a forward light function is provided to reduce a fabrication cost and power consumption quantity by performing a both-face display function in a single photoconductive substrate and an LCD module. CONSTITUTION: A photoconductive substrate(1) having a connecting face(101) connected with an LCD module(2) is divided into the first photoconductive section(11) and the second photoconductive section(12). The LCD module is divided into the first display section(21) and the second display section(22) corresponding to the first and second photoconductive sections. A deflecting plate(13) is disposed between the first photoconductive section and the first display section. The first reflective substrate(14) is disposed on one surface of the first photoconductive section opposite to the deflecting plate. The second reflective plate(23) is disposed at one side of the second display section which is an end from the photoconductive substrate.

Description

Liquid crystal display with a photoconductive board having back light and front light functions}

The present invention relates to a liquid crystal display having a photoconductive substrate having a backlight and an all-light function. The liquid crystal display of the present invention includes a photoconductive substrate coupled with a liquid crystal display module. In cooperation with the photoconductive substrate and the reflecting substrates respectively disposed on the liquid crystal display module, the photoconductive substrate has both all-light and backlight functions, so that the liquid crystal display can achieve a double-sided display effect.

5 shows a conventional double sided liquid crystal display in which two backlight substrates 82 and 83 are disposed on both sides of the reflecting substrate 81, respectively. Two liquid crystal display modules 84 and 85 are respectively disposed on one side of the corresponding backlight substrates 82 and 83 which are ends from the reflecting substrate 81. The backlight substrates 82 and 83 provide the backlight for the liquid crystal display modules 84 and 85, respectively. By such means, the cover substrate or any other electronic product of the mobile telephone can be provided with two liquid crystal display panels on both inside and outside surfaces.

However, in the double-sided liquid crystal display, two liquid crystal display modules 84 and 85 and two backlight substrates 82 and 83 are required as a light source for achieving the double-sided display effect. Therefore, manufacturing cost of a double-sided liquid crystal display is high. In addition, more power is consumed in the use of such a double-sided liquid crystal display. In addition, the two liquid crystal display modules 84 and 85 and the two backlight substrates 82 and 83 make a double-sided liquid crystal display with a thickness nearly twice that of a single-sided liquid crystal display. As a result, the design of mobile phones and other electronic products is limited in relation to the conventional double-sided liquid crystal display.

6 shows another type of double-sided liquid crystal display. Two liquid crystal display modules 92 and 93 are respectively disposed on corresponding ones of two opposite surfaces of the photoconductive substrate 91. The light rays of the light source 94 pass through the photoconductive substrate 91 to the liquid crystal display modules 92 and 93 to provide the necessary backlight for the liquid crystal display modules 92 and 93. Therefore, the cover substrate or the personal digital assistant (PDA) of the mobile telephone can include two liquid crystal display panels on both the inner and outer surfaces thereof.

In the above-described structure, only one light source 94 and one photoconductive substrate 91 are used to provide the light necessary for the liquid crystal display modules 92 and 93. However, it is still necessary to use two liquid crystal display modules 92 and 93. Therefore, manufacturing costs are still quite high and power consumption is high. In addition, the overall thickness of the display cannot be made thin. Thus, the design of mobile phones or other electronic products is still limited in relation to the above-mentioned double-sided liquid crystal display.

It is a main object of the present invention to provide a liquid crystal display having a photoconductive substrate having a backlight and an all-light function. The liquid crystal display includes a photoconductive substrate and a liquid crystal display module connected to the photoconductive substrate. The photoconductive substrate is divided into a first photoconductive section and a second photoconductive section. The liquid crystal display module is divided into a first display unit and a second display unit corresponding to the first and second photoconductive units. The first reflecting substrate is disposed on one side of the first light conducting portion, which is an end from the liquid crystal display module. The first light conducting portion and the first reflecting substrate emit light rays toward the first display portion, so that the first display portion achieves a backlight display effect. The second reflective substrate is disposed on one side of the second display portion, which is an end from the photoconductive substrate. Light rays emitted from the second light conducting portion toward the second display portion are reflected by the second reflecting substrate, so that the second display portion achieves an all-optical display effect. Thus, one single photoconductive substrate and cooperative liquid crystal display module can achieve the double sided display effect.

1 is a cross-sectional view showing the configuration of a liquid crystal display having a photoconductive substrate having a backlight and an all-light function according to the present invention;

2 is a view showing the emission of light according to the present invention,

3 is a diagram showing the path of light rays associated with the first photoconductive structures of the present invention;

4 is a view showing a path of light rays associated with a second photoconductive structure of the present invention;

5 is a view showing the configuration of a conventional double-sided liquid crystal display,

6 is a view showing the configuration of another conventional double-sided liquid crystal display.

[Description of Symbols for Main Parts of Drawing]

1 photoconductive board

2: liquid crystal display module

3: light source

11: first photoconductive section

12: 2nd photoconductive section

13: deflecting plate

13A: semi-reflecting deflecting plate

13B: Penetrable Deflecting Plate

14: 1st reflective board

21: 1st display section

22: 2nd display section

23: 2nd reflective board

101: connecting face

111: 1st photoconductive structure

121: 2nd photoconductive structure

201: upper glass substrate

202: lower glass substrate

203: liquid crystal layer

The liquid crystal display having a photoconductive substrate having a backlight and an all-light function according to the present invention includes a photoconductive substrate, a liquid crystal display module connected to the photoconductive substrate, and at least one light source for providing light rays to the photoconductive substrate. The photoconductive substrate has a connection surface for connecting with the liquid crystal display module and is divided into a first photoconductive unit and a second photoconductive unit, and the liquid crystal display module respectively corresponds to the first and second photoconductive units. A display plate and a second display unit, and a refractive plate is disposed between the first photoconductive unit and the first display unit, and a first reflective substrate is disposed on one surface of the first photoconductive unit facing the refractive plate; A second reflecting substrate is disposed on one side of the second display portion, which is an end from the photoconductive substrate.

According to the liquid crystal display having a photoconductive substrate having a backlight and an all-light function according to the present invention, a plurality of first photoconductive structures are formed on one surface of the first photoconductive portion of the photoconductive substrate adjacent to the first reflecting substrate. It is done.

In addition, the liquid crystal display having a photoconductive substrate having a backlight and an all-optical function according to the present invention is characterized in that a plurality of second photoconductive structures are formed on one surface of the second photoconductive portion of the photoconductive substrate facing the connection surface. do.

In the liquid crystal display having a photoconductive substrate having a backlight and an all-optical function of the present invention, the refractive plate is disposed between the photoconductive substrate and the liquid crystal display module, and a part of the refractive plate between the first photoconductive unit and the first display unit. Is a semi-reflective refracting plate, whereas a part of the refracting plate between the second photoconductive part and the second display part is a through refraction plate.

In addition, the liquid crystal display having a photoconductive substrate having a backlight and an all-optical function according to the present invention is characterized in that the first light conducting structure is a concave surface toward the liquid crystal display module.

In addition, the liquid crystal display having a photoconductive substrate having a backlight and an all-optical function according to the present invention is characterized in that the second light conducting structure is a groove having a V-shaped cross section.

The invention can be better understood through the following description and the annexed drawings.

1 is a cross-sectional view showing the configuration of the present invention, Figure 2 is a view showing the emission of the light beam according to the invention, Figure 3 is a view showing the path of the light beams associated with the first photoconductive structure of the present invention, Figure 4 Is a view showing the path of light rays associated with the second photoconductive structure of the present invention, Figure 5 is a view showing the configuration of a conventional double-sided liquid crystal display, Figure 6 is a view showing the configuration of another conventional double-sided liquid crystal display .

First, referring to FIGS. 1 to 4, the liquid crystal display of the present invention provides light to the photoconductive substrate 1, the liquid crystal display module 2 connected to the photoconductive substrate 1, and the photoconductive substrate 1. It includes a light source 3 for. The liquid crystal display module 2 includes an upper glass base layer 201, a lower glass base layer 202, and a liquid crystal layer 203 positioned between the upper glass base layer 201 and the lower glass base layer 202.

The photoconductive substrate 1 has a connection surface 101 for connecting with the refraction plate 13, and the refraction plate 13 is disposed between the photoconductive substrate 1 and the liquid crystal display module 2. The photoconductive substrate 1 is divided into a first photoconductive section 11 and a second photoconductive section 12. The liquid crystal display module 2 is divided into a first display unit 21 and a second display unit 22 corresponding to the first and second photoconductive units 11 and 12, respectively. The portion of the refracting plate 13 between the first light conducting portion 11 and the first display portion 21 is a semi-reflective refracting plate 13A. The refracting plate 13 between the second photoconductive section 12 and the second display section 22 is a through refracting plate 13B. In addition, the first reflective substrate 14 is disposed on one surface of the first photoconductive portion 11 facing the semi-reflective refracting plate 13A. The second reflecting substrate 23 is disposed on one side of the second display portion 22 which is an end from the photoconductive substrate 1.

One surface of the first photoconductive part 11 of the photoconductive substrate 1 adjacent to the first reflecting substrate 14 is formed of a plurality of first photoconductive structures 111. In an embodiment of the present invention, the first photoconductive structure 111 is a concave surface toward the liquid crystal display module 2. In addition, a plurality of second photoconductive structures 121 are formed on one surface of the second photoconductive portion 12 facing the connection surface 101. In an embodiment of the present invention, the second photoconductive structures 121 are channels having a V-shaped cross section.

Referring to Fig. 2, according to the above-described configuration of the present invention, the light rays emitted from the light source 3 are reflected by the antireflective refracting plate 13A by the first light conducting structures 111 and the first reflecting substrate 14. Is reflected towards. A portion of the light reflected by the antireflection refracting plate 13A is refracted through the first display portion 21 and exits therefrom. Thus, the first display unit 21 forms a backlight display pattern.

The other part of the light reflected by the anti-reflective refracting plate 13A is reflected toward the first photoconducting structures 111 and the first reflecting substrate 14, so that the second light conducting portion in the photoconductive substrate 1 ( 12) is reflected continuously. As a result, the second photoconductive portion 12, which is far from the light source 3, may still have sufficient light rays.

Some of the light rays emitted to the second light conducting portion 12 are directly emitted to the second display portion 22, while another part of the light rays is emitted toward the second light conducting structures 121. The light beam is reflected toward the second display unit 22 by the second photoconductive structures 121. All light rays emitted to the second display unit 22 are reflected by the second reflecting substrate 23 through the second light conducting unit 12 and the second display unit 22 and thereby the second reflecting substrate 23. The two display sections 22 form the all-optical display pattern.

The first and second photoconductive structures 111 and 121 of the first and second photoconductive sections 11 and 12 will be described in more detail with reference to FIGS. 3 and 4. 3 is an enlarged view illustrating a path of a light beam with respect to the first photoconductive structure 111. The first photoconductive structure 111 is concave toward the liquid crystal display module 2. Therefore, when the light beam L is emitted to the first light conducting structure 111, the reflected light beam L1 is reflected toward the refracting plate 13 and the refracting light beam L2 is refracted toward the first reflecting substrate 14. do. The refractive light beam L2 is continually reflected between the first reflective substrate 14 and the first light conducting structure 111 to generate the reflected light beam and the refractive light beam. Finally, the reflected light and the refracted light are emitted to the semi-reflective refracting plate 13A. A portion of the light beam passes through the semi-reflective refracting plate 13A and is radiated to the first display portion 21 as a back light source. The remaining part of the light beam passes through the refracting plate 13 and is reflected in the first photoconductive part 11.

4 is an enlarged view illustrating a path of a light ray with respect to the second photoconductive structure 121. The second photoconductive structure 121 is a channel having a V-shaped cross section. Therefore, when the light beam L 'is emitted to the second light conducting structure 121, the reflected light beam L'1 is reflected toward the second display portion 22 and the refractive light beam L'2 is applied to the second light conducting structure 121. It is refracted through the photoconductive structure 121. The reflected light L_1 passes through the second display unit 22 and is radiated to the second reflecting substrate 23. The light beam is then reflected through the second display portion 22 to form an all-light source.

According to the apparatus described above, the double-sided display function can be performed with only one single photoconductive substrate 1 and the liquid crystal display module 2. Therefore, manufacturing cost is significantly lowered and power consumption is also reduced. In addition, the overall thickness of the liquid crystal display becomes significantly thinner. Thus, a mobile telephone or other electronic product to which the present invention can be applied can be designed more freely.

While the invention has been described in connection with embodiments, the embodiments are used only to illustrate the invention and are not intended to be limiting in scope. Various modifications may be made to the above embodiments without departing from the spirit of the invention.

In the liquid crystal display having a photoconductive substrate having a backlight and an all-light function of the present invention, a single photoconductive substrate and a liquid crystal display module can perform a double-sided display function, thereby lowering manufacturing cost and reducing power consumption. The overall thickness of the liquid crystal display is remarkably thin, so that a mobile phone or other electronic product to which the present invention can be applied can be designed more freely.

Claims (6)

A photoconductive substrate, a liquid crystal display module connected to the photoconductive substrate, and at least one light source for providing light rays to the photoconductive substrate; The photoconductive substrate has a connection surface for connecting with the liquid crystal display module and is divided into a first photoconductive section and a second photoconductive section, The liquid crystal display module is divided into a first display unit and a second display unit respectively corresponding to the first and second photoconductive units, A refractive plate is disposed between the first photoconductive section and the first display section, A first reflecting substrate is disposed on one surface of the first photoconductive part facing the refractive plate, And a second reflecting substrate on one side of the second display portion, which is an end portion from the photoconductive substrate, having a photoconductive substrate having a backlight and an all-light function. 2. The photoconductive substrate having a backlight and an all-optical function according to claim 1, wherein a plurality of first photoconductive structures are formed on one surface of the first photoconductive part of the photoconductive substrate adjacent to the first reflecting substrate. LCD display. The liquid crystal of claim 1, wherein a plurality of second photoconductive structures are formed on one surface of the second photoconductive portion of the photoconductive substrate facing the connection surface. display. The method of claim 1, wherein the refractive plate is disposed between the photoconductive substrate and the liquid crystal display module, A portion of the refracting plate between the first light conducting portion and the first display portion is a semi-reflective refracting plate, whereas a part of the refracting plate between the second light conducting portion and the second display portion is a through refractive plate. And a photoconductive substrate having an all-optical function. 3. The liquid crystal display of claim 2, wherein the first light conducting structure is a concave surface facing the liquid crystal display module. 3. The liquid crystal display of claim 2, wherein the second photoconductive structure is a groove having a V-shaped cross section.