Color filter substrate, production method thereof, display panel, and display apparatus

1. A color filter substrate, comprising:

a base substrate;

a plurality of color filter units in an array arrangement on the base substrate, wherein each of the color filter units comprises a blue color filter, a red color filter, and a green color filter;

wherein the blue color filter has the smallest thickness among the color filters of each of the color filter units,

wherein in each of the color filter units, the color filters are aligned in a line, and the blue color filter is located at an end portion of the line, and

wherein:

the blue color filter has a thickness of 1.55 micrometers to 2.00 micrometers, the red color filter has a thickness of 1.70 micrometers to 2.15 micrometers, and the green color filter has a thickness of 1.85 micrometers to 2.30 micrometers; or

the blue color filter has a thickness of 1.55 micrometers to 2.00 micrometers, the green color filter has a thickness of 1.70 micrometers to 2.15 micrometers, and the red color filter has a thickness of 1.85 micrometers to 2.30 micrometers.

2. The color filter substrate according to claim 1 , wherein

the blue color filter has the largest area among the color filters of each of the color filter units.

3. The color filter substrate according to claim 1 , wherein

the area of the blue color filter is 1.05 to 1.1 times that of the red color filter, and/or the area of the blue color filter is 1.05 to 1.1 times that of the green color filter.

4. The color filter substrate according to claim 1 , wherein

the color filters are produced from a resin material.

5. The color filter substrate according to claim 1 , further comprising a black matrix which is on the base substrate and between the color filter units.

6. A method for producing the color filter substrate of claim 1 , wherein each color filter is formed by the steps of:

covering the base substrate with a color filter material layer;

covering the color filter material layer with a photoresist layer;

exposing and developing the photoresist layer to pattern the photoresist layer and expose a part of the color filter material layer; and

performing etching treatment and removing the exposed color filter material layer and the patterned photoresist layer to form a patterned color filter,

wherein the blue color filter is first formed, and the blue color filter is etched and the thickness thereof is reduced in the process(es) of forming one or more other color filters.

7. The method according to claim 6 , wherein

in each of the color filter units, the color filters are aligned in a line, and the blue color filter is located at an end portion of the line.

8. A display panel, comprising:

an array substrate;

the color filter substrate of claim 1 ; and

a liquid crystal layer located between the array substrate and the color filter substrate.

9. The display panel according to claim 8 , wherein:

the display panel comprises an integrated circuit;

the display panel has a display region, a first strip-shaped non-display region, and a second strip-shaped non-display region;

the color filter substrate is in the display region, the integrated circuit is in the first strip-shaped non-display region, and the first strip-shaped non-display region is adjacent to the second strip-shaped non-display region in a clockwise order observed from the front of the display panel; and

in each of the color filter units, the at least two color filters are aligned in a line, the blue color filter is located at an end portion of the line, and the blue color filter is closest to the second strip-shaped non-display region; and

wherein:

the first strip-shaped non-display region is below the display region and the second strip-shaped non-display region is on the left of the display region observing from the front of the display panel, or

the first strip-shaped non-display region is above the display region and the second strip-shaped non-display region is on the right of the display region observing from the front of the display panel.

10. A display apparatus, comprising the display panel of claim 8 .