JPS6261488A - Rgb liquid crystal laminated plate and solid-state image pickup element filter - Google Patents

Abstract

PURPOSE:To fetch an object with colors by forming liquid crystals containing coloring matters for transmissive color separation as a multilayer and disposing it at the front part of a solid state image pickup element. CONSTITUTION:The front surface of an receiving image of an image pickup element 1, double side electrodes 5 are laminated by one side electrodes 4. Between respective laminated plates, liquid crystals for the color separation 6, 7, 8 are filled and the driving common electrode 9 of the respective liquid crystals is disposed externally, and electrode 10, 11, 12 are provided for driving the respective liquid crystals. As the transmission condition of the respective liquid crystals 6, 7, 8, a filter for a white color component is formed, a contra- correcting value at that time is sent to an A/D converter 14, saved to a correcting value buffer 15, and set at a subtracter 17 as a subtraction value through a D/A converter 16. By using an RGB liquid crystal laminate plates and a solid-state image pickup element filter, an object can be easily fetched with colors.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an RGB liquid crystal laminate plate, a solid-state image sensor, and a solid-state image sensor, which is used for an R()B spectral filter in a nine-camera using a solid-state image sensor such as a COD or MOS. Regarding filters.

[Summary of the invention]

In the present invention, before the R()B spectrum of a solid-state image sensor,
GH type liquid crystal (hereinafter referred to as GH type liquid crystal) iRGB
By using a dye for spectroscopy and having a laminated structure, it has a filter effect that can be used not only for KGB spectroscopy but also for B/W spectroscopy.

[Conventional technology]

Conventionally, as shown in FIG. 2, a mosaic filter 2'f that performs color separation into red, green, and blue on the image receptor portion of the solid-state image sensor 1 is used.
In order to install and protect the filter, a front glass 5 is generally installed on top of the filter 2 to form a box structure.

[Problems to be solved by the present invention]

However, in the conventional structure, the combination of the mosaic filter 2 and the solid-state image sensor 1 is done in dot units during assembly, so it is not easy to process.If the mosaic structure is made of red, green, and bright colors, five times the required resolution is required. Therefore, the full degree of integration of the image sensor is required.

(9) Since one pixel is expressed by t-3 dots, the three dot information will be different.

Therefore, in order to solve these disadvantages, the present invention provides an image sensor that is easy to assemble and has the necessary resolution.

The purpose is to enable color separation of green and blue.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has nine characteristics in that a multilayer liquid crystal containing a transparent color separation dye is installed in front of a solid-state image sensor.

[Effect]

When the image pickup device configured as described above receives only the red spectrum, only the red spectrum within the multilayer plate is detected.
- A potential is applied to the transparent liquid crystal 107Fl, and other liquid crystals to make them transparent, and the same effect as when a red color filter is installed in front of the image sensor is performed. After that, green and blue colors are also sequentially captured, and by combining each image height information, it becomes possible to capture the subject in color.

Therefore, the image sensor and the multilayer '! There is no need for assembly based on pixel correspondence between filters, and manufacturing is easy.

Also, the resolution of the image sensor is limited to only the necessary resolution.
It is possible to capture images of subjects.

[Example of real power]

Embodiment 1 of the present invention will be described below based on the drawing (E). In FIG. 1, a double-sided electrode 5 is laminated on the single-sided electrode 4 on the image receiving front surface of the image sensor 1. A cross-sectional view 1 of the inside of the laminated plate!
: Shown in Figure 5. Color separation liquid crystal 6, 7.8 between each laminated plate
A common IE electrode 91 for driving each liquid crystal is installed outside, and IE electrodes 10, 11, and 121 are installed for driving each liquid crystal.

Therefore, the contrast correction tf44 of the liquid crystals 6, 7.8 is shown in FIG. Each liquid crystal 6, 7, 8t - filter for white component as per transmission state? The contra correction value at that time is sent to the A/D converter 14, saved in the correction value buffer 15, and subtracted 41 through the D/A core/<-p 1b@.
7 as the subtraction value (offset value).

For example, when making a filter for liquid crystal 6, a potential is applied to electrode 9 and electrodes 11 and 12.

There, the liquid a7.8 becomes transparent, and the image sensor 1 sends the subject information 1st to the subtractor 17. Therefore, by subtracting the correction value for the sharp white color that is set first, the received image information of the spectral component of the liquid crystal 6 is obtained.

In the above embodiments, it is effective to use an RGB liquid crystal laminate and a solid-state image sensor filter.

The subject can be easily captured in color VC.

(The spectral fraction of the t%R()B filter used in the present invention is shown as an example, and is not limited to the ratio.) [Effects of the Invention] As explained above, the present invention has multiple The f5 structure is made by injecting each dye liquid crystal for color separation into each layer of the laminated plate.The image sensor t can be easily changed for color image reception, and the resolution of the image sensor increases, and the resolution: This has the effect of preventing this from occurring.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the grooves of an RGB liquid crystal laminate according to the present invention. FIG. 2 is a conventional RGB imaging diagram. FIG. 3 is a detailed sectional view of FIG. 1. Figure 4 is a block diagram of contrast correction. 1...Image sensor 2...Mosaic filter 3...Front glass 4...Single-sided electrode plate 5...Double-sided electrode plate 6 ...R dye liquid crystal 7...G dye liquid crystal 8...B dye liquid crystal 9...Liquid crystal drive common 1 pole 1u...R dye liquid crystal Drive 1 Beme 11...
・G color dark liquid crystal drive @electrode 12゛...B color dark liquid crystal drive I giant pole 15...
...Subject information 14...Person/D converter 15...Correction value buffer 16...D/A converter 17...Reduction 1L unit or more

Claims (1)

[Claims] (1) An RGB liquid crystal laminate and a solid-state image sensor filter, characterized by having multiple layers of GH-type liquid crystal containing a transparent color separation dye and installed in front of a solid-state image sensor.