Display device and display panel and manufacturing method thereof

A display panel for displaying an image, comprising:

• a display surface comprising a first region with a first curvature;
• and a second region with a second curvature different from the first curvature, the display panel outputting a first light in the first region and outputting a second light in the second region;
• wherein the first light has a first normal brightness in a normal view angle and a first oblique brightness in an oblique view angle, and the second light has a second normal brightness in the normal view angle and a second oblique brightness in the oblique view angle;
• wherein a ratio of a difference between the first normal brightness and the second normal brightness to the first normal brightness is defined as a first ratio, a ratio of a difference between the first oblique brightness and the second oblique brightness to the first oblique brightness is defined as a second ratio, and the first ratio is less than the second ratio;
• and
• wherein the first light has a first normal chromaticity in the normal view angle and a first oblique chromaticity in the oblique view angle, the second light has a second normal chromaticity in the normal view angle and a second oblique chromaticity in the oblique view angle, an absolute value of a difference between the first normal chromaticity and the second normal chromaticity is defined as an absolute value of a first chromaticity coordinate difference, an absolute value of a difference between the first oblique chromaticity and the second oblique chromaticity is defined as an absolute value of a second chromaticity coordinate difference, and the absolute value of the first chromaticity coordinate difference is less than the absolute value of the second chromaticity coordinate difference.

A manufacturing method of a display device, comprising following steps:

• providing a display device, wherein the display device comprises a display panel for displaying an image, and the display panel comprises a display surface;
• bending the display panel to make a first region of the display surface of the display panel have a first curvature and a second region of the display surface of the display panel have a second curvature, wherein the second curvature is different from the first curvature;
• performing brightness measurement to the display panel that has been bent to obtain an absolute value of a normal brightness difference between the first region and the second region,
• performing chromaticity measurement to the display panel that has been bent to obtain an absolute value of a first chromaticity coordinate difference and an absolute value of a second chromaticity coordinate between the first region and the second region;
• wherein a first light is outputted in the first region, a second light is outputted in the second region, the first light has a first normal chromaticity in a normal view angle and a first oblique chromaticity in an oblique view angle, and the second light has a second normal chromaticity in the normal view angle and a second oblique chromaticity in the oblique view angle, wherein an absolute value of a difference between the first normal chromaticity and the second normal chromaticity is defined as the absolute value of the first chromaticity coordinate difference, and an absolute value of a difference between the first oblique chromaticity and the second oblique chromaticity is defined as the absolute value of the second chromaticity coordinate difference;
• and
• performing an adjustment procedure to reduce the absolute value of the normal brightness difference and to make the absolute value of the first chromaticity coordinate difference less than the absolute value of the second chromaticity coordinate difference.