JP2000194271A - Display device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a gaze almost to the center of the field angle of a liquid crystal display panel as to the display device using the liquid crystal display panel and the display control method. SOLUTION: The liquid crystal display panel 1 is supported by a rotary shaft 3 rotatably on a substrate 5 and a light beam irradiation part 2 for gaze angle adjustment which emits a directional light beam almost to the center of the field angle of the liquid crystal panel 1 is provided to a support frame 4 so that it rotates integrally with the liquid crystal display panel 1. Or light beam irradiation parts for gaze angle adjustment are provided to the substrate 5 and emit directional light beams at mutually different angles, a directional light beam matching the gaze is selected and indicated, and the liquid crystal display panel 1 is rotated according to the indication to align the gaze almost with the center of the field angle of the liquid crystal display panel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a display device using a liquid crystal display panel and a display control method. The liquid crystal display panel has a relatively narrow viewing angle. Therefore, in order to recognize the display content without error, it is necessary to visually check the display surface of the liquid crystal display panel from an optimal position. For this purpose, a configuration is employed in which the liquid crystal display panel is rotatably supported and adjusted so that the display contents can be easily recognized.

[0002]

2. Description of the Related Art Various types of liquid crystal display panels are known. However, liquid crystal display panels use transmitted light or reflected light to perform display. The corners are relatively narrow. Generally, the angle is around 120 ° in many cases, and the angle is not often symmetrical with respect to the center line orthogonal to the display surface. Therefore, technology development for expanding the viewing angle is being promoted, and recently, an angle of about 160 ° has been obtained.

[0003] Due to the relatively narrow viewing angle, for example, as shown in FIG.
The operator pivots the liquid crystal display panel 61 so that the displayed contents can be easily recognized. At the solid line position, the line of sight 64 substantially coincides with the center of the viewing angle θ1, and the position of the liquid crystal display panel 61 in this case is optimal.

[0004] In the case of the line of sight 65, the display content of the liquid crystal display panel 61 is difficult to see because it is located outside the viewing angle θ1. Therefore, the liquid crystal display panel 6
1 is rotated to a dotted line position and adjusted so as to be a display surface orthogonal to the line of sight 65. As a result, the viewing angle becomes θ2, and the display content can be recognized even with a slight change in the line of sight 65. In addition, a touch panel that allows a touch input with a finger, an input pen, or the like can be provided on the display surface. The rotating mechanism of the liquid crystal display panel 61 described above is also applied to a laptop type word processor, a personal computer, and the like.

[0005]

It is practically not easy to adjust the rotation of the liquid crystal display panel 61 so that the lines of sight 64 and 65 are positioned at the center of the viewing angle of the liquid crystal display panel 61. That is, since the viewing angle characteristic of the liquid crystal display panel 61 does not have a peak characteristic at the center thereof,
Lines of sight 64, 65 within a viewing angle of such a degree that display contents can be recognized.
Will be adjusted to be located. If the posture of the operator is always constant, the display contents of the liquid crystal display panel 61 can be recognized in the above-described adjustment state.

[0006] However, it is common that the posture changes due to long hours of work. At that time, the liquid crystal display panel 61
When the line of sight 64, 65 can be adjusted to the position shown by the solid line or the dotted line so that the line of sight 64, 65 is almost at the center of the field of view, the line of sight 64, 65 usually moves within the range of the field of view. Can be recognized. On the other hand, if the initial adjustment position is greatly deviated from the center of the viewing angle, the lines of sight 64 and 65 move out of the viewing angle due to a change in posture,
There was a problem that the display contents could not be recognized. SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to easily adjust a liquid crystal display panel so that a line of sight comes to a position substantially at the center of the viewing angle.

[0007]

According to the present invention, there is provided a display device comprising:
(1) A display device in which a liquid crystal display panel 1 is rotatably provided on a substrate 5, and a line-of-sight angle adjusting light beam irradiation unit 2 that irradiates a directional light beam to approximately the center of the viewing angle of the liquid crystal display panel 1 is provided. It is provided at a position where it rotates integrally with the liquid crystal display panel 1. Therefore, it is possible to easily adjust the liquid crystal display panel 1 so that the line of sight is approximately at the center of the viewing angle.

(2) A display device in which a liquid crystal display panel is rotatably provided on a substrate, a plurality of line-of-sight angle adjusting light beam irradiation units for irradiating directional light beams of different angles, and the plurality of line-of-sight angle units. A selection instructing unit for selecting and instructing the optimum directional light beam corresponding to the adjusting light beam irradiating unit; and a rotation unit for rotating the display surface of the liquid crystal display panel to a position orthogonal to the optimal directional light beam in accordance with the selection instruction by the selection instructing unit. A dynamic drive unit is provided on a substrate.

(3) It is possible to provide a rotation drive unit configured to drive a rotation shaft provided rotatably on the liquid crystal display panel and to lock the liquid crystal display panel at a stop position. Therefore, it is also possible to automatically adjust the rotation position of the liquid crystal display panel. Further, by locking at the stop position, it can be used as a touch panel type liquid crystal display panel.

[0010] (4) The line-of-sight angle adjusting light beam irradiation unit guides light beams from the light source and irradiates the light beams from one end at one end with different angles from the tip, and enters the light beams into the other ends of these optical fibers. And a light source such as a light emitting diode or a light emitting diode.

(5) The selection instructing section includes a light emitting section provided in correspondence with the plurality of line-of-sight angle adjusting light beam irradiation sections, and a selective light emission control section for causing the light emitting section to emit and display the position of the optimal directional light beam. , At a position substantially orthogonal to the optimal directional light beam corresponding to the light emitting unit selectively emitted by the selective light emission control unit,
A rotation drive unit configured to rotate the display surface of the liquid crystal display panel.

The display control method according to the present invention also includes: (6) a line-of-sight angle adjusting light beam for irradiating a directional light beam to a position pivotally integral with the liquid crystal display panel at substantially the center of the viewing angle of the liquid crystal display panel. The method includes the step of providing an irradiating section and rotating the display surface of the liquid crystal display panel to a position where the directional light from the sight line angle adjusting light irradiating section can be viewed. That is,
By displaying approximately the center of the viewing angle of the liquid crystal display panel with a directional light beam, it is possible to easily adjust the viewing angle to be substantially at the center of the viewing angle.

(7) The liquid crystal display panel, which is rotatably provided on the substrate, designates visible directional light rays among finger light rays having different angles from a plurality of viewing angle adjusting light beam irradiation sections, The method includes a step of rotating the liquid crystal display panel so that the display surface is substantially orthogonal to the directional light beam.

[0014]

1 is an explanatory view of a first embodiment of the present invention, in which (A) is a perspective view of a main part, (B) is a sectional view of a main part, and 1 is a liquid crystal display panel. 2, a line-of-sight angle adjustment light beam irradiation unit, 3 a rotation axis, 4 a support frame of a liquid crystal display panel,
Reference numeral 5 indicates a substrate, 6 indicates a line of sight, and θ indicates a viewing angle.

The liquid crystal display panel 1 is rotated by a rotating shaft 3 to a substrate 5.
The liquid crystal display panel 1 is provided with a line-of-sight angle adjusting light beam irradiating unit 2 that irradiates a directional light beam in a direction substantially at the center of the viewing angle θ of the liquid crystal display panel 1. The line-of-sight angle adjusting light beam irradiating unit 2 is shown to be provided on a part of the support frame 4 of the liquid crystal display panel 1, and is preferably provided substantially at the center of the vertical position of the support frame 4. However, it can be provided at other positions.

The rotating shaft 3 has a structure that allows the liquid crystal display panel 1 to rotate and stops the liquid crystal display panel 1 at the adjustment position, and various known structures can be applied. For example, a click operation can be performed, and the angle of the display surface of the liquid crystal display panel 1 can be adjusted with the accuracy of the interval between the click operations. Further, the motor can be rotated by a motor, and a brake or the like can be provided so as to be locked at the rotation stop position. Or, by combining an electromagnet and a ratchet mechanism, the rotation axis 3
May be applied.

Then, the liquid crystal display panel 1 is rotated manually or by a rotation drive unit such as a motor to a position where the directional light rays from the line-of-sight angle adjusting light beam irradiation unit 2 can be viewed. This means that the line of sight 6 has been adjusted to be substantially at the center of the viewing angle of the liquid crystal display panel 1. In this case, when the push button or the like is pressed, the motor rotates and the rotating shaft 3
Is gradually rotated to release the hand from the push button when the directional light beam from the line-of-sight angle adjusting light beam irradiating unit 2 can be viewed. It is also possible to adopt a configuration in which the display panel 1 is locked. Further, by providing the push button for normal rotation and reverse rotation of the motor, it is also possible to configure so that the adjustment deviation from the optimum position can be easily returned.

FIGS. 2A and 2B are explanatory views of a second embodiment of the present invention. FIG. 2A is a perspective view of a main part, and FIG. 2B is a sectional view of a main part. In the figure, 11 is a liquid crystal display panel, 12 ₁ , 1
2 _2, 12 _3, ... are line-of-sight angle adjustment ray irradiation unit, 1
3 is a rotating shaft, 15 is a substrate, 16 ₁ , 16 ₂ , 16 ₃ ,.
.. Denotes a selection instruction unit, 17 denotes a light source such as a light emitting diode, 1
8 denotes a light-shielding cylinder.

The line-of-sight angle adjusting light irradiators 12 ₁ , 1
2 _2, 12 _3, provided on the substrate 15 to emit directional light with different angles ..., selection instruction unit 16 ₁ in correspondence with, 16 _2, 16 _3, provided,. Each of the line-of-sight angle adjusting light irradiation units may have a configuration in which a light source 17 such as a light-emitting diode is provided in a light-shielding cylinder 18 as shown enlarged on the right side, for example. Note that a high-brightness light source such as a laser is likely to have a bad influence on the eyes when viewed, so it is desirable to use a relatively low-brightness light source.

Each of the line-of-sight angle adjusting light beam irradiation units 12 ₁ , 1
2 ₂ , 12 ₃ ,..., Corresponding to a selection instruction section 1 by a push button or the like
6 _1, 16 _2, 16 _3, a ... provided, the viewing angle adjusting light irradiation section was visible directional beam, instructs the selection instruction unit. In accordance with the instruction, the liquid crystal display panel 11 can be rotated by a rotation driving unit (not shown), and the liquid crystal display panel 11 can be adjusted so that the display surface is substantially orthogonal to the line of sight. That is, the rotation of the display surface of the liquid crystal display panel 11 can be adjusted so that the line of sight is substantially at the center of the viewing angle.

FIG. 3 is an explanatory view of a third embodiment of the present invention.
32 ₁ , 32 ₂ , 32 ₃ ,... 32 _n and a light source 34 are shown. The display panel 31 and the rotation shaft 33 provided on the substrate 35 are indicated by dotted lines. Matahikari fibers 32 _1, 32 _2, 32 _3, such that the radiation directivity of light from one end of the ... 32 _n is different angles, the optical fiber 32 _1, 32 _2, 32 _3, ... 3
2 _n is fixed to the substrate 35 and the optical fibers 32 ₁ , 3
2 _2, 32 _3, a light source 34 provided at the other end of · · · 32 _n,
The light from the light source 34 is converted into optical fibers 32 ₁ , 32 ₂ ,
32 _3, and guided by · · · 32 _n, is for irradiating a directional beam at different angles.

In this embodiment, it is possible to dispose a large number of line-of-sight angle adjusting light irradiation units in a narrow space, and it is possible to adjust the rotation of the liquid crystal display panel 31 at a relatively small angle. Further, there is an advantage that only one light source 34 is required even when a large number of directional light rays having different angles are irradiated. Although the case where the liquid crystal display panel is arranged along the vertical direction is shown, it is also possible to arrange the liquid crystal display panel along the horizontal direction. In addition, a push button or the like for selecting and instructing a line-of-sight angle adjusting light beam irradiation unit that matches the line of sight is arranged in the same manner as in the case shown in FIG. The liquid crystal display panel 31 moves and adjusts the rotation of the liquid crystal display panel 31 so that the display surface is substantially perpendicular to the line of sight.

FIG. 4 is an explanatory view of a fourth embodiment of the present _{invention, 42 1, 42 2, 42} 3, ··· 42 n is viewing angle adjustment ray irradiation unit, 43 rotation drive unit , 44 are a rotation control unit, 45 is a movement detection unit, 46 ₁ , 46 ₂ , 46 ₃ ,
... 46 _n denotes a light emission selection instructing unit, 47 denotes a light emission display control unit, 48 denotes a track ball, 49 denotes a control switch, and the liquid crystal display panel is rotated and adjusted by the rotation driving unit 43. , Are not shown.

The movement detecting section 45 detects a rotation direction and a rotation angle when the trackball 48 is operated, and adds the detected information to the light emission display control section 47 and the rotation control section 44. The light emission display control unit 47 includes light emission selection instructing units 46 ₁ , 4.
6 _2, 46 _3, are sequentially emitting accordance with the rotation direction · · · 46 _n, emit one emission selection instruction section corresponding to the rotation angle.

Also, the ray irradiators 42 ₁ , 42 for adjusting the line of sight angle
_2, 42 _3, ··· 42 _n is for irradiating a directional beam at different angles, when it was visually
For example, the line of sight when the directional beam and the line of sight from the angle adjusting light irradiation unit 42 ₃ are matched, by operating the track ball 48, viewing angle adjustment emission selection instruction unit 46 ₃ corresponding to the light irradiation unit 42 ₃ To emit light. When the control switch 49, such as a push button switch in the ON in this state, the rotation control unit 44, emitting a selection from the indicated portion ₄₆₃ viewing angle adjustment ray irradiation unit 42 ₃ corresponding to the directional beam and the liquid crystal display panel The rotation drive unit 43 is controlled so that the display surfaces are orthogonal to each other.
As a result, the adjustment can be performed so that the line of sight is located substantially at the center of the viewing angle of the liquid crystal display panel.

FIG. 5 is a schematic explanatory view of a fifth embodiment of the present invention, 51 a liquid crystal display panel, 52, 52a are line-of-sight angle adjustment ray irradiation unit, 53 rotation shaft, 54 ₁ motor , 54 ₂ gears, 54 ₃ electromagnetic brake 54 ₄ rotation angle detector, 55 denotes a substrate, 56 _1, 56 _2, ... are selected instruction unit, 57 drive unit, 58 comparing unit, 59 Indicates a drive control unit.

The liquid crystal display panel 51 is mounted on the
3 by supporting rotatably, when adjusting the rotational position of the liquid crystal display panel 51, the pivot shaft 53 is rotated by a motor 54 ₁ via a gear 54 _4. Also the electromagnetic brake 54 ₂ to lock the pivot shaft 53 to the stop position. Also, the rotating shaft 53
The rotational angle detected by the rotation angle detector 54 _3, and inputs the comparison processing unit 58.

The electromagnetic brake 54 _2, to allow the rotation of the rotating shaft 53 when energized, can be a mechanism for locking the rotation shaft 53 by the spring or the like by the excitation cutoff. In that case, when the driving unit 57 drives the motor 54 _1, thus releasing the pivot shaft 53 from the locked state by exciting the electromagnetic brake 54 _2. The stops driving the motor 54 _1, when stopping the rotational shaft 53 to the adjustment position, is blocked also excitation of the electromagnetic brake 54 _2, it is possible to the pivot shaft 53 in a locked state.

Further, selection instructing sections 56 ₁ , 56 ₂ , 56 ₃ ,.
.. Is configured by a push button switch or the like, and presses a selection instruction unit corresponding to a line-of-sight angle adjustment light beam irradiation unit that emits a directional light beam that matches the line of sight. For example, the liquid crystal display panel 5
When 1 is positioned not on the solid line but on the substantially same plane as the substrate 55, the selection instructing unit corresponding to the line-of-sight angle adjusting light beam irradiation unit 52 in which the line of sight of the dashed-dotted arrow and the line of sight coincide. When 56 _3, and presses it.

The comparison processing section 58 of the drive control unit 59, since the angle information from the rotation angle detector ₅₄₃ is different from the angle information of the angle β by pressing the selection instruction unit 56 _3, the drive unit 5
7 is applied with a control signal. The driving unit 57 includes the electromagnetic brake 5
4 ₂ is excited to release the lock of the rotating shaft 53 and the motor 5
4 Rotate ₁ . Thereby, the liquid crystal display panel 51
Is rotated so as to approach the angle β from the surface of the substrate 55,
When the angle beta, and the angle information from the rotation angle detector 54 _3, since the angle information matches by pressing the selection instruction unit 56 _3, the comparison processing unit 58, the motor 5 from the driving unit 57
41. Stop the drive to ₁ and set the electromagnetic brake 54 ₂
Cut off the excitation. Thereby, the liquid crystal display panel 51
Means that the rotation has been adjusted to the position of the angle β designated and instructed, and the line of sight is positioned substantially at the center of the viewing angle of the liquid crystal display panel 51 at the solid line position.

[0031] a directional ray and line-of-sight angle adjustment selection instruction section, for example, 56 ₅ corresponding to the light irradiation unit 52a which line of sight and matches the dotted arrows, and presses this, as described above, the rotation angle detector and the angle information by the 54 _3, because there is an angle information by selecting instruction unit 56 ₅ do not match, the comparison processing unit 58 a control signal applied to the drive unit 57 drives the motor 54 ₁ from the drive unit 57, and the electromagnetic brake 54 ₂ is excited to release the lock of the rotation shaft 53, the liquid crystal display panel 51 is rotated to the dotted line position, and angle information from the rotation angle detector 54 _3, and the angle information by the selection instruction unit 56 ₅ matches Therefore, the comparison processing unit 58 uses the motor 54 ₁ by the driving unit 57.
To stop the excitation of the drive and the electromagnetic brake 54 _2. Thereby, the liquid crystal display panel 51 is locked at the adjustment position.

The present invention is not limited to the above embodiments, but can be variously modified. For example, a configuration in which the rotation drive unit rotates in the forward and reverse directions of the rotation shaft by an electromagnetic ratchet mechanism or the like can be applied.

[0033]

As described above, according to the present invention, a line-of-sight angle adjusting light beam irradiating unit for irradiating a directional light beam in a direction substantially at the center of the viewing angle of the liquid crystal display panel is provided integrally with the liquid crystal display panel. By rotating the liquid crystal display panel manually or by rotating the liquid crystal display panel so that the line of sight coincides with the directional light, the line of sight can be easily adjusted so that the line of sight is approximately at the center of the viewing angle of the liquid crystal display panel. There are advantages.

A plurality of line-of-sight angle adjusting light irradiation units are provided on the substrate so as to irradiate directional light beams of different angles, and the liquid crystal display panel is rotated by selecting and indicating a directional light beam that matches the line of sight. Then, by controlling the display surface so as to be orthogonal to the directional light beam, it is possible to adjust the line of sight to be substantially at the center of the viewing angle of the liquid crystal display panel. In addition, the adjustment control is merely instructed by the selection instruction unit corresponding to the directional light beam which can be visually observed, and there is an advantage that the operation is easy. In addition, when the line-of-sight angle adjusting light beam irradiation unit is configured by using an optical fiber, there is an advantage that it can be configured so that a directional light beam of a large number of angles can be irradiated in a narrow space.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a third embodiment of the present invention.

FIG. 4 is an explanatory diagram of a fourth embodiment of the present invention.

FIG. 5 is a schematic explanatory diagram of a fifth embodiment of the present invention.

FIG. 6 is an explanatory diagram of a viewing angle of a liquid crystal display panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 2 Ray irradiation part for line-of-sight angle adjustment 3 Rotation axis 4 Support frame 5 Substrate θ Viewing angle

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H089 HA40 QA16 5C006 AF51 AF52 AF63 BB11 EA01 EA03 FA55 5C080 AA10 BB05 DD30 JJ02 JJ06 5G435 AA00 AA01 BB12 DD03 DD09 DD10 EE02 EE13 EE16 EE50 GG18 GG41

Claims (7)

[Claims] 1. A display device in which a liquid crystal display panel is rotatably provided on a substrate, wherein a line-of-sight angle adjusting light beam irradiating unit for irradiating a directional light beam substantially at the center of a viewing angle of the liquid crystal display panel is provided. A display device provided at a position where the liquid crystal display panel rotates integrally with the liquid crystal display panel. 2. A display device having a liquid crystal display panel rotatably provided on a substrate, comprising: a plurality of line-of-sight angle adjusting light beam irradiation units for irradiating directional light beams of different angles; A selection instructing unit for selecting and instructing the optimal directivity light beam corresponding to the light beam irradiation unit; and a rotation for rotating a display surface of the liquid crystal display panel to a position orthogonal to the optimal directivity light beam according to the selection instruction by the selection instructing unit. A display device, comprising: a driving unit provided on the substrate. 3. The display device according to claim 1, further comprising a rotation drive unit configured to drive a rotation shaft for rotating the liquid crystal display panel and lock the liquid crystal display panel at a stop position. 4. The optical line irradiating section for adjusting the line-of-sight angle, an optical fiber that guides a light beam from a light source and irradiates the light beam from one end with different angles from a tip, and a light source that emits a light beam to the other end of the optical fiber. 3. The method according to claim 2, wherein
The display device according to the above. 5. A light-emitting unit provided in correspondence with the plurality of line-of-sight angle adjusting light irradiation units, a selection light-emitting control unit for causing the light-emitting unit to display a position of an optimal directional light beam. A rotation drive unit configured to rotate a display surface of the liquid crystal display panel at a position substantially orthogonal to the optimal directional light beam corresponding to the light emitting unit selectively emitted by the selective light emission control unit. The liquid crystal display device according to any one of claims 2 to 4, wherein 6. A line-of-sight angle adjusting light beam irradiating unit for irradiating a directional light beam at substantially the center of the viewing angle of the liquid crystal display panel at a position where the liquid crystal display panel rotates integrally with the liquid crystal display panel. A display control method, comprising a step of rotating a display surface of the liquid crystal display panel to a position where a directional light beam from a light beam irradiation unit can be viewed. 7. A liquid crystal display panel rotatably provided on a substrate is instructed to indicate visible directional light rays among directional light rays having different angles from a plurality of sight line angle adjusting light beam irradiation units. A display control method comprising a step of rotating the liquid crystal display panel so as to have a display surface substantially orthogonal to the sexual ray.