WO2013135070A1

WO2013135070A1 - Light-splitting device, manufacturing method therefor and 3d display device

Info

Publication number: WO2013135070A1
Application number: PCT/CN2012/085162
Authority: WO
Inventors: 秦广奎; 柳在健
Original assignee: 京东方科技集团股份有限公司
Priority date: 2012-03-16
Filing date: 2012-11-23
Publication date: 2013-09-19
Also published as: CN102650741A; CN102650741B

Abstract

A manufacturing method for a light-splitting device (202) comprises: 1. collecting relevant manufacture parameters of a light-splitting device (202) which is arranged at the light-emitting side of a display panel; 2. using a light path pattern passing through the light-splitting device (202) which is obtained through a light path reversibility principle, calculating the optical dimensions of the light-splitting device (202) according to the geometric relationship in the light path pattern and the relevant manufacture parameters of the light-splitting device (202), the left eye and the right eye of an observer being used as light sources; and 3. according to the calculated optical dimensions of the light-splitting device (202), manufacturing the light-splitting device. Also disclosed are a light-splitting device (202) and a 3D display device.

Description

Spectroscopic device, manufacturing method thereof and 3D display device

Embodiments of the present invention relate to a beam splitting device, a method of fabricating the same, and a 3D display device. Background technique

There are two main types of 3D display technology, one is glasses-type 3D technology, and the other is eye-eye 3D technology. The optical splitting device in the 3D display technology mainly includes a grating type baffle plate and a prism type beam splitter. The eye 3D display device usually includes a display panel and a light splitting device, wherein the light splitting device is disposed on the light exiting side of the display panel. When the eye 3D display device projects two images with parallax captured by different angles of view similar to the eyes of the person, the left eye of the viewer is seen by the spectroscopic device, and the right eye is seen by the right eye. The optical size of the spectroscopic device is the key to affecting the 3D display.

For the grating type baffle, the optical size mainly includes parameters such as the width of the light-transmitting area of the grating type baffle and the width of the light-blocking area. For the prism type beam splitter, the optical size is mainly the parameters such as the width of each lens in the prism type beam splitter.

In the prior art, since the display panel belongs to a surface light source, in the process of fabricating the spectroscopic device, the optical size of the spectroscopic device needs to be obtained by a calculus equation or the like, and the process of obtaining the optical size of the spectroscopic device is very complicated and difficult. Summary of the invention

Embodiments of the present invention provide a spectroscopic device, a method for fabricating the same, and a 3D display for solving the problem of a complicated and difficult process for obtaining an optical size of a spectroscopic device in the prior art.

The present invention provides a method for fabricating a spectroscopic device, comprising: collecting related production parameters of a spectroscopic device disposed on a light exiting side of a display panel; and utilizing an optical path diagram of the spectroscopic device obtained by a reversible optical path, and according to Calculating the optical size of the optical splitting device and the related fabrication parameters of the optical splitting device, and calculating the optical size of the optical splitting device, wherein the left eye and the right eye of the observer are used as the light source; The optical size is fabricated to obtain a light splitting device.

Optionally, the related manufacturing parameters of the light splitting device include: a distance between the light splitting device and the display panel, a distance between the light splitting device and a human eye, and a pixel in the display panel Width.

Alternatively, the spectroscopic device comprises a grating baffle or a prismatic beam splitter.

Alternatively, when the spectroscopic device is a grating baffle, the optical size comprises a width of the grating baffle light transmissive region and the light blocking region.

Alternatively, when the spectroscopic device is a prismatic beam splitter, the optical size comprises the width of each lens in the prismatic beam splitter.

Alternatively, the obtaining, by the optical path reversible principle, the optical path diagram passing through the optical splitting device comprises: treating a left eye and a right eye of a viewer receiving the light as two light sources, and the two light rays emitted by the two light sources pass through The light splitting device reaches the display panel to obtain an optical path diagram of the light splitting device; the distance between the two light rays distributed on the display panel is greater than zero.

Embodiments of the present invention also provide a light splitting device, wherein the light splitting device is fabricated according to any of the above methods.

Alternatively, the spectroscopic device is a grating baffle, and the width c of the light blocking region of the grating baffle and the width d of the light transmitting region are calculated as follows:

, , , z(b+2a)

c > n ( a + b ) _~

z+gd _≤ z(b+2a)

z+g where a is the width of the color film in the color film layer, b is the width of the black matrix film in the color film layer, and g is the distance between the display panel and the grating baffle plate, z is the distance between the viewer's eyes and the grating baffle, and n is a positive integer.

Alternatively, the spectroscopic device is a prismatic baffle, and the lens width m in the prismatic baffle is calculated as follows:

g(6.5-k2),

m = -^ ^J -+k2

z+g where k2 has a value range of 2a+b-^<k2<2a+3b-^, g is the display panel

The distance between Z Z and the prismatic baffle, z is the distance between the viewer's eye and the prismatic baffle.

Embodiments of the present invention also provide a 3D display device, including: a display panel; The light splitting device is disposed on a light exiting side of the display panel. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below. It is obvious that the drawings in the following description relate only to some embodiments of the present invention, and are not intended to limit the present invention. . In the drawing:

1 is a light path diagram of a method of fabricating a spectroscopic device according to a first embodiment of the present invention;

Figure 2 is a geometrical diagram of the optical path diagram of Figure 1;

3 is a light path diagram of a method of fabricating a spectroscopic device according to a second embodiment of the present invention;

Figure 4 is a geometrical view of the two beams of the left and right sources of Figure 3 passing through the same lens of the prism beam splitter;

Figure 5 is a diagram showing the geometry of two beams of the left and right sources of Figure 3 passing through adjacent lenses in a prismatic beam splitter. detailed description

The technical solutions of the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings of the embodiments of the present invention. It is apparent that the described embodiments are part of the embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention without departing from the scope of the invention are within the scope of the invention. The spectroscopic device and the manufacturing method thereof and the 3D display device provided by the present invention will be described in detail below with reference to the accompanying drawings.

In an embodiment of the invention, the light emitted by the pixels displaying the left eye picture in the display panel passes through the light splitting device to reach the left eye, and the light emitted by the pixels of the right eye picture displayed in the display panel passes through the light splitting device and reaches the right eye. When the above-mentioned beam splitting device is fabricated, the left and right eyes of the person are regarded as the left light source and the right light source by using the principle of reversible light, and the light emitted by the left light source and the right light source respectively passes through the light splitting device and reaches the display panel respectively, wherein the left light source emits The light reaches the pixel in the display panel displaying the left eye picture, and the light emitted by the right source reaches the pixel in the display panel displaying the right eye picture.

In the embodiment of the present invention, the technical solution of the embodiment of the present invention is introduced by using a grating type baffle plate and a prism type beam splitter as an example of a light splitting device, and the display panel has a plurality of pixels. Wherein, the light emitted by the left light source passes through the light-transmitting area of the grating baffle to reach the image of the left-eye picture displayed on the display panel The light emitted by the right source passes through the light-transmitting area of the grating barrier to the pixel in the display panel displaying the right-eye picture. In practical applications, the sum of the widths of each of the light-transmitting regions and the light-blocking regions in the grating baffle is generally determined by the pixel design of the display panel.

A first embodiment of the present invention provides a method for fabricating a light splitting device. The specific steps are as follows: Step 101: Collect relevant production parameters of the optical splitting device.

1 is a light path diagram of a method of fabricating a spectroscopic device according to a first embodiment of the present invention. As shown in FIG. 1 , in the embodiment, the spectroscopic device is a grating baffle, and the relevant manufacturing parameters of the grating baffle include the width of the three color film in the color film layer 201 of the display panel, and the black matrix film (BM). The width of the film, the distance between the grating baffle 202 and the display panel, the distance between the grating baffle 202 and the human eye (that is, the left or right light source), and the like.

In this embodiment, the width of the BM film in the color film layer 201 is a, the widths of the red color film, the green color film, and the blue color film are all b, and the grating baffle 202 and the color film layer 201 in the display panel The distance between g and g can be between l and 3 mm, the distance from the right source A to the grating baffle 202 is z, and the light from the right source A passes through the grating baffle 202 to reach the color film layer 201. Thereafter, the maximum value of the width k of the color film layer 201 covered by the light from the right light source A is 2a+b, that is, k≤2a+b. After obtaining the above related production parameters of the spectroscopic device, the process proceeds to step 102.

Step 102: Obtain an optical path diagram of the optical splitting device by using an optical path reversible principle, and calculate an optical size of the optical splitting device according to a geometric relationship in the optical path diagram.

In this step, the optical size of the grating baffle includes the width of the light transmitting region and the light blocking region. The width of each light blocking region and the width of the light transmitting region in the grating baffle 202 are respectively set to c and d, respectively. Since the thickness of the grating baffle 202 is generally small, the calculation of the grating baffle 202 is performed. When the width of the light area and the light blocking area are small, the influence of the thickness can be ignored. In this embodiment, the sum of the color film of each color in the display panel and the width of the adjacent BM film a+b is a fixed value, so the sum of the widths of each of the light-transmitting regions and the light-blocking regions in the grating-type baffle 202 c+d is also a fixed value, and the relationship between the sum of the above two widths is as shown in formula (1):

c+d=n( a+b ) (1)

Where n is a positive integer.

In this embodiment, the value of n is usually greater than 1, for example, it may be 2.

Figure 2 is a geometrical diagram of the optical path diagram of Figure 1. As shown in FIG. 2, the line segment EFG and the line segment DBC are respectively located on the grating baffle 202 of FIG. 1 and the color film layer 201 of the display panel, wherein the light blocking layer The width of the region EF is c, the width of the light-transmitting region FG is d, the length of DB is a+b, and the length of BC is b.

According to the geometric relationship of the geometry shown in Fig. 2, since the line segment DC is parallel to the line segment EG, Δ AEG and Δ ADC are similar triangles, and Δ AFG and Δ ABC are also similar triangles. According to the geometric relationship between similar triangles, for Δ AEG and Δ ADC, the side lengths satisfy the following proportional relationship:

U (2)

AD AB ' For Δ AFG and △ ABC , the side lengths satisfy the following proportional relationship:

H BC AB ( ^K 3) '

According to formulas (2) and (3), formula (4) is obtained, and formula (4) is as follows:

" (4)

AD BC '

In the geometry shown in FIG. 2, AE = z, AD = z + g, FG = d, BC = k, then according to Equation (4) can be obtained formula ^(5):

According to formula (5), we can get: d = ^ (6) According to formula (6) and k ≤ 2a + b , we can get formula (7):

, z(b+2a) ,

D≤ ^-— ^L (7)

z+g

According to the formula ( ⁷ ) and c+d=n(a+b), the formula (8) can be obtained:

, , , , z(b+2a) ,

c > n a + b —— (8)

z+g In theory, the value of d ranges from 0 < d ≤ ^^, but in practical applications, the smaller the value of d, z+g, the less light is transmitted from the grating baffle 202. The lower the brightness, the width d of the light blocking area needs to be selected to meet the brightness requirement. For example, the value range of d can be 2(z+g) z+g ° In practical applications, when n is 2, the width of the light-blocking area width c is: 1 , , , z(b+2a)

c > 2(a + b)―"

z+g

Step 103: Calculate the optical device of the optical component of the spectroscopic device according to the calculation.

In this step, the spectroscopic device can be prepared by calculating the width c of each light blocking region and the width d of the light transmitting region in the grating baffle 202 obtained in the step 2.

In the method for fabricating the light splitting device of the present embodiment, the optical path reversible principle is used to treat the eyes of the person as the left light source and the right light source, and the light emitted by the left light source passes through the light transmitting area of the grating baffle to reach the left eye picture in the display panel. The light emitted by the right light source passes through the light-transmitting area of the grating baffle to reach the pixel of the right eye picture displayed on the display panel, thereby obtaining an optical path diagram when the light splitting device is split. Then, according to the geometric relationship of the optical path diagram, the optical size of the grating baffle can be calculated simply and conveniently, thereby preparing a spectroscopic device.

In practical applications, it is also possible to place a light source at the position of the viewer's eyes through the optical path reversible principle, and then use a Charge Coupied Device (CCD) detector to detect the light intensity distribution on the display panel behind the light splitting device, The degree of crosstalk of the 3D display device is determined.

Here, it should be noted that, as shown in FIG. 1 , the distance between the grating baffle and the display panel refers to a grid block in which the plane of the grating baffle and the plane of the display panel (the two planes are parallel to each other) The distance between the plane of the board and the plane of the human eye (the two planes are parallel to each other).

A second embodiment of the present invention also provides a method of fabricating a light splitting device.

3 is a light path diagram of a method of fabricating a spectroscopic device in accordance with an embodiment of the present invention. As shown in Fig. 3, the spectroscopic device in this embodiment is a prism-type beam splitter 203, and the display panel is constructed and sized according to the first embodiment. When it is required to make the light emitted by the left light source pass through the prism beam splitter 203 to reach the pixel of the left eye picture in the display panel, and the light emitted by the right light source passes through the prism beam splitter 203 to reach the pixel of the right eye picture displayed in the display panel, Using the reversible principle of the optical path to treat the left eye H and the right eye A as the left light source H and the right light source A, respectively, the light emitted by the left light source H and the right light source A will respectively reach the color film of different pixels of the display panel to avoid Two beams of light crosstalk.

Figure 4 shows the two beams of light from the left and right sources in Figure 3 through the prism beam splitter. The geometry of the mirror. As shown in FIG. 4, when the light emitted by the left light source H and the right light source A passes through the same lens on the prism beam splitter 203 to reach the color film layer of the display panel, the length of the distance CD of the two light rays on the color film layer 201 is taken. If the value is kl, then the range of kl is a<kl<2b+a, then AOCD and △ OAH are similar triangles, and the distance AH between the eyes can be 6.5cm. Then according to the geometric relationship of similar triangles, the following formula is obtained: 6.5 = z (9) '

According to formula (9): ki =^§ (10)

Z Figure 5 is the geometry of the two beams of the left and right sources in Figure 3 passing through the adjacent lenses in the prism beam splitter. As shown in FIG. 5, when the light emitted by the left light source H and the right light source A passes through the adjacent lens on the prism beam splitter 203 to reach the color film layer of the display panel, the distance between the two light rays on the color film layer 201 is k2. The range of k2 is a<k2<2b+a, where the geometry shown in Figure 5 can be paid:

2a+b<kl+k2<2a+3b (11)

According to formula (10) and formula (11):

6 5 6 5

2a+b— ^< k2<2a+3b— ^ (12)

z z

The centers of two adjacent lenses are 01 and 02 respectively, and the distance between 01 and 02 is set to m. According to the geometric relationship of the optical path diagram shown in Fig. 5, the following formula is obtained:

M-k2 _ g

6.5-k2 ~ ^+g ( ) According to formula (11), the distance between the centers of two adjacent lenses in the prism-type beam splitter can be calculated, that is, the width of each lens is:

g(6.5-k2),

z+g In practical applications, the relevant production parameters such as the focal length of the selected lens can also be calculated based on the geometry shown in Fig. 4 and Fig. 5.

Then, the prism type is manufactured according to parameters such as the width of the lens in the prism beam splitter obtained. Here, it should be noted that, as shown in FIG. 3, the distance between the prism beam splitter and the display panel refers to the shortest between the plane where the prism beam splitter is located and the plane where the display panel is located (the two planes are parallel to each other). Distance, the distance between the prismatic beam splitter and the human eye (ie, the left or right source;) is the shortest distance between the plane of the prismatic beam splitter and the plane of the human eye (the two planes are parallel to each other) distance.

In the above manufacturing method of the spectroscopic device according to various embodiments of the present invention, the two eyes of the person are regarded as the left light source and the right light source by using the optical path reversible principle, and the light emitted by the left light source reaches the display panel through the grating baffle or the prism type spectroscope. The pixel of the left eye picture is displayed, and the light emitted by the right source passes through the grating baffle or the prism beam splitter to reach the pixel of the right eye picture in the display panel, thereby obtaining the light path diagram of the light splitting device, and then according to the geometry in the light path diagram The geometric relationship of the graph makes it easy and convenient to calculate the optical dimensions of the beam splitter or prismatic beam splitter.

Another embodiment of the present invention provides a spectroscopic device, the optical parameters of which are calculated by the above-described optical fabrication method according to any embodiment of the present invention. The spectroscopic device can be used in a 3D display device to implement a 3D display function.

When the spectroscopic device is a grating baffle, the calculation formula of the width c of the light blocking region of the grating baffle and the width d of the light transmitting region are as follows:

, , , z(b+2a)

c > n ( a + b ) _~

z+gd _≤ z(b+2a)

z+g where a is the width of the color film in the color film layer, b is the width of the black matrix film in the color film layer, g is the distance between the display panel and the grating baffle, and z is the eye and the grating of the viewer. The distance between the baffles, n is a positive integer.

When the beam splitting device is a prism type beam splitter, the width m of the prism type beam splitter is calculated as follows:

g(6.5-k2),

m = -^ ^J -+k2

z+g where k2 has a value range of 2a+b-^< k2<2a+3b-^, g is the display panel and edge

The distance between the ZZ mirror beamsplitter, z is the distance between the viewer's eye and the prismatic beam splitter. The spectroscopic device in the embodiment of the present invention is characterized in that the human eyes are regarded as a left light source and a right light source, and the light emitted by the left light source passes through the grating baffle or the prism type spectroscope to reach the pixel of the left eye picture displayed in the display panel, right The light emitted by the light source passes through the grating baffle or the prism beam splitter to reach the pixel of the right eye picture in the display panel, thereby obtaining the light path diagram when the light splitting device is split, and then the calculation according to the geometric relationship in the light path diagram can be simply and conveniently calculated. The optical size of an optical device such as a grating type baffle plate or a prism type beam splitter can be obtained, whereby the light separating device of the embodiment of the present invention can be prepared.

An embodiment of the present invention further provides a 3D display device, including: a display panel; a light splitting device disposed on a light exiting side of the display panel, wherein the light splitting device can be prepared by the above-described light splitting device manufacturing method.

An example of the display panel is a liquid crystal display panel in which a TFT array substrate and an opposite substrate are opposed to each other to form a liquid crystal cell in which a liquid crystal material is filled. The opposite substrate is, for example, a color filter substrate. The pixel electrode of each pixel unit of the TFT array substrate is used to apply an electric field to control the degree of rotation of the liquid crystal material to perform a display operation. In some examples, the liquid crystal display panel further includes a backlight that provides backlighting for the array substrate.

Another example of the display panel is an organic electroluminescence display panel in which a TFT array is subjected to a display operation. An exemplary embodiment, however, the invention is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the invention. These modifications and improvements are also considered to be within the scope of the invention.

Claims

Claim

1. A method for fabricating a light splitting device, comprising:

相关 collecting related production parameters of the spectroscopic device disposed on the light emitting side of the display panel;

Calculating an optical path of the spectroscopic device by using an optical path diagram obtained by a reversible optical path, and calculating an optical size of the spectroscopic device according to a geometric relationship in the optical path diagram and the correlation fabrication parameter of the spectroscopic device, wherein an observer is The left and right eyes serve as light sources;

The spectroscopic device is fabricated according to the calculated optical size of the spectroscopic device.

2. The method of fabricating a spectroscopic device according to claim 1, wherein the correlation fabrication parameters of the spectroscopic device comprise:

a distance between the spectroscopic device and the display panel, a distance between the spectroscopic device and a human eye, and a width of a pixel in the display panel.

The method of fabricating a spectroscopic device according to claim 2, wherein the width of the pixel is a width of a black matrix film of the pixel and a width of a color film of three colors.

A method of fabricating a spectroscopic device according to claim 1, wherein said spectroscopic device comprises a grating barrier or a prismatic beam splitter.

The method of fabricating a spectroscopic device according to claim 4, wherein when the spectroscopic device is a grating baffle, the optical size comprises a width of the grating baffle light transmitting region and the light blocking region.

The method of fabricating a spectroscopic device according to claim 4, wherein when said spectroscopic device is a prismatic beam splitter, said optical size comprises a width of each of said prismatic beamsplitters.

The method of fabricating a spectroscopic device according to claim 1, wherein the obtaining an optical path diagram through the optical splitting device by an optical path reversible principle comprises:

The left eye and the right eye of the viewer receiving the light are regarded as two light sources, and the two light rays emitted by the two light sources pass through the light splitting device to reach the display panel, thereby acquiring an optical path diagram of the light splitting device; The distance the light is distributed across the display panel is greater than zero.

The method of fabricating a spectroscopic device according to claim 5, wherein the calculation formula of the width c of the barrier light blocking region and the width d of the light transmitting region is as follows:

, , , z(b+2a)

c > n ( a + b ) _~

z+g _D≤ z(b+2a)

z+g where a is the width of the color film in the color film layer, b is the width of the black matrix film in the color film layer, g is the distance between the display panel and the grating baffle, z is the human eye and The distance between the grating baffles, n is a positive integer.

The method of fabricating a spectroscopic device according to claim 6, wherein the calculation formula of the lens width m in the prismatic baffle is as follows:

g(6.5-k2),

m = -^ ^J -+k2

z+g where k2 has a value range of 2a+b-^<k2<2a+3b-^, g is the display panel

Z Z

The distance from the prismatic baffle, Z is the distance between the human eye and the prismatic baffle.

A spectroscopic device produced by the method according to any one of claims 1 to 9.

The spectroscopic device according to claim 10, wherein said spectroscopic device is a grating type baffle, and a width c of the light blocking region of the grating baffle and a width d of the light transmitting region are calculated as follows:

, , , z(b+2a)

c > n ( a + b ) _~

z+gd _≤ z(b+2a)

A spectroscopic device according to claim 10, wherein said spectroscopic device is a prismatic baffle, and the calculation formula of the lens width m in the prismatic baffle is as follows:

g(6.5-k2),

m = -^ ^J -+k2

z ⁺ g where k2 has a value range of 2a+b-^<k2<2a+3b-^, g is the display panel

Z Z

13. A 3D display device, comprising: Display panel;

A spectroscopic device according to any of claims 10-12, disposed on a light exiting side of said display panel.