Image controllers and display devices
View Patent ↗A representative display device includes a display module, a polarization controller and a compensator. Each pixel region of the display module has a first sub-pixel region, a second sub-pixel region and a third sub-pixel region respectively providing a first light, a second light and a third light of the same polarization. The polarization controller has control regions that control the polarization of the light passing therethrough. The compensator has first compensating regions, second compensating regions and third compensating regions corresponding to the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, respectively. The compensations of phase retardation of the first light, the second light and the third light generated by passing through the first compensating regions, the second compensating regions and the third compensating regions are different from one another.
1. A display apparatus, comprising:
a display module having a plurality of pixel regions arranged in an array, a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel is disposed on a surface of the backlight module and includes a first substrate, a second substrate and a liquid crystal layer sandwiched by the first substrate and the second substrate, wherein each of the pixel regions has a first sub-pixel region, a second sub-pixel region and a third sub-pixel region, and light emitted from the backlight module passes through the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, respectively, so as to provide a first light with a first wavelength, a second light with a second wavelength and a third light with a third wavelength;
a polarization controller configured on a display surface of the display module and having a plurality of control regions, wherein each of the control regions corresponds to one of the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, the control regions control polarizations of the first light, the second light and the third light passing though the control regions, and each of the first light, the second light and the third light exhibits two polarization components along two orthogonal directions after passing through the control regions; and
a compensator configured on a side of the polarization controller away form the display surface and having a plurality of first compensating regions corresponding to the first sub-pixel regions, a plurality of second compensating regions corresponding to the second sub-pixel regions and a plurality of third compensating regions corresponding to the third sub-pixel regions, wherein the polarization components of the first light, the second light and the third light pass through the compensator, compensations of phase retardation respectively generated by the first compensating regions, the second compensating regions and the third compensating regions are different from one another so that different phase retardation due to lights with different wavelengths passing through the polarization controller can be eliminated.
2. The display apparatus of claim 1 , wherein:
the first wavelength is longer than the second wavelength, and the second wavelength is longer then the third wavelength;
the compensation of phase retardation generated by the first compensating regions is smaller than the compensation of phase retardation generated by the second compensating regions; and
the compensation of phase retardation generated by the second compensating regions is smaller than the compensation of phase retardation generated by the third compensating regions.
3. The display apparatus of claim 1 , wherein the first light, the second light and the third light are red light, green light and blue light, respectively.
4. The display apparatus of claim 1 , wherein the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions are respectively arranged in a plurality of columns.
5. The display apparatus of claim 1 , wherein the polarization controller comprises:
a first substrate having a first electrode layer;
a second substrate having a second electrode layer; and
a liquid crystal layer sandwiched by the first electrode layer and the second electrode layer.
6. A display apparatus, comprising:
a display module having a plurality of pixel regions arranged in an array a liquid crystal display panel and a backlight module, wherein the liquid crystal display panel is disposed on a surface of the backlight module and includes a first substrate, a second substrate and a liquid crystal layer sandwiched by the first substrate and the second substrate, wherein each of the pixel regions has a first sub-pixel region, a second sub-pixel region and a third sub-pixel region, and light emitted from the backlight module passes through the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions respectively so as to provide a first light, a second light and a third light, and polarization of the first light, the second light and the third light are the same;
a polarization controller configured on a display surface of the display module and having a plurality of first control regions and a plurality of second control regions, wherein the first control regions and the second control regions are configured in an alternating row-wise arrangement, and each of the first control regions corresponds to the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, and each of the second control regions corresponds to the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions, and the first control regions and the second control regions control polarization of the lights passing though the first control regions and the second control regions, and at least one of the first light, the second light and the third light has a first linear polarization direction after passing through the first control regions and said at least one light has a second linear polarization direction after passing through the second control regions, and the first linear polarization direction is perpendicular to the second linear polarization direction; and
a compensator configured on a side of the polarization controller away form the display surface and having a plurality of first compensating regions corresponding to the first sub-pixel regions, a plurality of second compensating regions corresponding to the second sub-pixel regions and a plurality of third compensating regions corresponding to the third sub-pixel regions, wherein the first linear polarization direction and the second linear polarization direction of the at least one light pass through the compensator, compensations of phase retardation respectively generated by the first compensating regions, the second compensating regions and the third compensating regions are different from one another so that different phase retardation due to lights with different wavelengths passing through the polarization controller can be eliminated, and after passing through the polarization controller and the compensator, the polarization of the first light, the second light and the third light are the same.
7. The display apparatus of claim 6 , wherein:
the first wavelength is longer than the second wavelength, and the second wavelength is longer then the third wavelength;
the compensation phase retardation generated by the first compensating regions is smaller than the compensation of phase retardation generated by the second compensating regions; and
the compensation of phase retardation generated by the second compensating regions is smaller than the compensation of phase retardation generated by the third compensating regions.
8. The display apparatus of claim 6 , wherein the first light, the second light and the third light are red light, green light and blue light, respectively.
9. The display apparatus of claim 6 , wherein the first sub-pixel regions, the second sub-pixel regions and the third sub-pixel regions are respectively arranged in a plurality of columns.
10. The display apparatus of claim 6 , wherein the polarization controller comprises:
a first substrate having a first electrode layer;
a second substrate having a second electrode layer; and
a liquid crystal layer sandwiched by the first electrode layer and the second electrode layer.