JPH0644187B2 - Liquid crystal panel display and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a liquid crystal panel display including a plurality of liquid crystal display panels (hereinafter, simply referred to as liquid crystal panels or panels) and a manufacturing method thereof.

(Prior Art) A liquid crystal panel using TFT or the like is useful as a thin display panel, but due to manufacturing and manufacturing technology problems, the size of the liquid crystal panel is usually 5 to 10 cm on a side, and at most 30 cm. Due to the size of a corner, a so-called multi-panel method is used in which a plurality of liquid crystal panels are joined together when forming a large-sized liquid crystal panel display.

In the multi-panel system, when four unit liquid crystal panels 1 are bonded to each other as shown in the schematic perspective view of FIG.
Since the non-picture element region 3 is provided in the peripheral portion of the picture element section 2 of each liquid crystal panel 1, the non-picture element line 5, so-called seam line, is formed in the connection section 4.

(Problems to be Solved by the Invention) The present invention is formed by a non-picture element region generated at a connecting portion between panels in a liquid crystal panel display configured by combining a plurality of unit liquid crystal panels as described above. An object of the present invention is to provide a structure of a liquid crystal panel display and a manufacturing method thereof, which prevent deterioration in visual quality due to a seam line and do not give a viewer a feeling of strangeness.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention uses an optical system such as a screen mirror or a prism in which an image formed by a picture element portion is placed on the main surface of a panel. By moving the optical axis) in parallel, on the joint part formed in the connection part of the liquid crystal panel,
This is to solve the problem by displaying the picture element image.

With such a configuration, the division of the image due to the non-picture element portion that has occurred at the connection portion of the liquid crystal panel is eliminated, and continuous image display can be performed on the display configured by a plurality of panels.

(Example) When a so-called 16-inch size liquid crystal panel display having a diagonal dimension of 40 cm is constructed by bonding two liquid crystal panels together,
The size of the pixel area of a unit liquid crystal panel is approximately 240 mm x 165 mm.

FIG. 2 is a schematic plan view when the unit liquid crystal panels are bonded together. For convenience of explanation, the size of the unit picture element 6, 6'group is shown in a greatly enlarged manner as compared with the size of the liquid crystal panel 1, 1 ', and the liquid crystal panels 1, 1'are joined together. The non-picture element regions 8 and 8'in the vicinity of the joined portion 7 are enlarged for the same reason.

FIG. 3 is a schematic sectional view taken along the line AA ′ in FIG. First,
As shown in FIGS. 2 and 3, the joint portions 7 of the liquid crystal panels 1 and 1 ′ are connected to the pixel regions 9 and 9 ′ of the respective liquid crystal panels from the joint portions 7 when fixed by the joint portions 7. The distances to the edges, that is, the widths We of the non-picture element regions 8 and 8'are made equal to the picture element pitch size W _p of the unit picture elements 6 and 6 '. Set the dimensions and LCD panel I
After adjusting and matching the relative positional relationship between the liquid crystal panel II and the liquid crystal panel II1 ', both liquid crystal panels are bonded and fixed at the joint portion 7. In the figure, 10 and 10 'are liquid crystal sealing parts, and 11 and 11' are electrode lead terminals.

Next, the optical path guide unit 12 having a sectional shape as shown in the schematic sectional view of FIG. 4 is placed on the main surfaces of the liquid crystal display panels I and II fixedly joined. This optical path guide unit
As shown in FIGS. 5 (a) and 5 (b), the structure and function of 12 are derived from a set of optical components such as a mirror 14 having an optical reflection surface 13 on both sides and inclined at 45 degrees, or a prism 14 '. As shown in the same figure, it has a function of moving the incident light 15 in parallel like the outgoing light 16, and each optical reflection surface 13 has the center of the optical path guide unit 12 as shown in FIG. The lines 17 are arranged symmetrically with respect to the line 17, and each reflection surface 13 has a size equal to the above-mentioned pixel pitch size Wp.
W _L , and the movement of the optical path, that is, the outgoing light with respect to the incident light 15.
The shape angle of the reflecting surface 13 is set so that the optical path shift of 16 becomes 1 pitch (W _L ) in the direction of the unit center line 17.

The optical path guide unit 12 is mounted on the liquid crystal panel I1 and the panel II.
When mounting on the main surface of the display panel 19 composed of 1 ', as shown in the schematic cross-sectional view of FIG. 1, the optical path changing parts 18A to 18T of the optical path guide unit 12 are mounted on the liquid crystal panels I1 and II1'. The unit picture elements 6 and 6'are adjusted and placed so as to coincide with a to t. In other words, the center line 17 of the optical path guide unit 12 is located on the same line as the joint 7 of the liquid crystal panel.

By forming the display panel 19 having the above-described structure, when the liquid crystal panels I1 and II1 'are driven by irradiation from a light source (not shown) installed on the opposite main surface side, the pixel a is The light l ₁ of the transmitted incident light 15 passes through A of the optical path changing unit 18 of the optical path guide unit 12, and the optical path is translated by one picture element pitch (Wp) by the reflection of the reflection surface 13 and The emitted light la ₁ is obtained immediately above the element b. Similarly, the light l ₃ transmitted through the picture element j adjacent to the non-picture element portion 8 of the liquid crystal panel I1 is output as the emitted light lj ₃ directly above the non-picture element portion 8 by the light path changing portion J of the light path changing guide unit 12. Appears.

Similarly, the incident light l ₄ transmitted through the picture element part k adjacent to the non-picture element part 8'of the liquid crystal panel II1 'is also changed in its optical path in the direction of one picture element pitch center line 17 by the optical path changing part K. The ray lk ₄ appears adjacent to the above lj ₃ .

The light incident on the other picture elements, which is not explained, is output in the same manner with its optical path changed, and the present invention can provide a large-sized liquid crystal display in which the bonding lines cannot be seen as a single liquid crystal display panel as a whole.

(Effect of the Invention) As will be apparent from the detailed description above, according to the present invention, by forming the optical path guide unit on the liquid crystal panel, the division of pixels due to the non-picture element portion when the liquid crystal panel is connected is eliminated. Therefore, a large-sized liquid crystal display can be constructed which has a comfortable visibility.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, FIG. 2 is a schematic plan view showing the connection of a liquid crystal panel according to the present invention, FIG. 3 is a sectional view of FIG. 2, and FIG. FIG. 5 is a schematic sectional view of the optical path guide unit of FIG. 5, FIG. 5 is a sectional view illustrating the function of the optical path guide unit of FIG. 4, and FIG. 6 is a perspective view showing a conventional example. 1, 1 '... Liquid crystal panel, 6 ... Unit picture element, 7 ... Connection section (of liquid crystal panel), 8, 8' ... No picture element section, 12 ... Optical path guide unit, 13 ... Optical reflection surface, 15 ... Incident light , 17 ... Center line (of optical path guide unit), 18 ... Optical path changing part, 19 ... Display panel.

Claims (4)

[Claims] 1. In a liquid crystal panel display formed by joining a plurality of unit liquid crystal panels, a width We of a non-picture element portion at an end of the unit liquid crystal panel is formed to be equal to a picture element pitch Wp of the unit picture element portion, and An optical path changing optical path guide unit including a prism or a mirror having a parallel movement function is provided on the main surface of the unit liquid crystal panel so that the optical path of the outgoing light with respect to the incident light matches the pixel pitch Wp. Characteristic liquid crystal panel display. 2. A liquid crystal panel display as set forth in claim 1, wherein the mirror constituting the optical path changing unit for changing the optical path comprises an array of double-sided mirrors tilted at an angle of 45 degrees. . 3. A liquid crystal panel display as set forth in claim 1, wherein the prism forming the optical path changing optical path guide unit is an array of isosceles prisms. 4. In manufacturing a liquid crystal display panel in which a plurality of unit liquid crystal panels are joined together, a width We of a non-picture element portion at an end of the unit liquid crystal panel is formed to be equal to a picture element pitch Wp of the unit picture element portion. In addition, on the main surface of the unit liquid crystal panel, an optical path changing optical path guide unit including a prism or a mirror having a parallel movement function by matching the optical path of the outgoing light with respect to the incident light with the pixel pitch Wp is provided at the center thereof. A method for manufacturing a liquid crystal panel display, wherein lines are provided so as to match the connection lines of the unit liquid crystal panel.